[ BlockLemma
    ( SourcePos
        { sourceName = "test/examples/proofassume.tex"
        , sourceLine = Pos 1
        , sourceColumn = Pos 1
        }
    )
    ( Marker "assumetest" )
    ( Lemma []
        ( StmtConnected Implication
            ( StmtFormula
                ( FormulaChain
                    ( ChainBase
                        ( ExprVar
                            ( NamedVar "x" ) :| []
                        ) Positive
                        ( RelationSymbol
                            ( Command "in" )
                        )
                        ( ExprVar
                            ( NamedVar "y" ) :| []
                        )
                    )
                )
            )
            ( StmtFormula
                ( FormulaChain
                    ( ChainBase
                        ( ExprVar
                            ( NamedVar "x" ) :| []
                        ) Positive
                        ( RelationSymbol
                            ( Command "in" )
                        )
                        ( ExprVar
                            ( NamedVar "y" ) :| []
                        )
                    )
                )
            )
        )
    )
, BlockProof
    ( SourcePos
        { sourceName = "test/examples/proofassume.tex"
        , sourceLine = Pos 4
        , sourceColumn = Pos 1
        }
    )
    ( Assume
        ( StmtFormula
            ( FormulaChain
                ( ChainBase
                    ( ExprVar
                        ( NamedVar "x" ) :| []
                    ) Positive
                    ( RelationSymbol
                        ( Command "in" )
                    )
                    ( ExprVar
                        ( NamedVar "y" ) :| []
                    )
                )
            )
        )
        ( Have Nothing
            ( StmtFormula
                ( FormulaChain
                    ( ChainBase
                        ( ExprVar
                            ( NamedVar "x" ) :| []
                        ) Positive
                        ( RelationSymbol
                            ( Command "in" )
                        )
                        ( ExprVar
                            ( NamedVar "y" ) :| []
                        )
                    )
                )
            ) JustificationEmpty ( Qed JustificationEmpty )
        )
    )
, BlockLemma
    ( SourcePos
        { sourceName = "test/examples/proofassume.tex"
        , sourceLine = Pos 9
        , sourceColumn = Pos 1
        }
    )
    ( Marker "assumetesttwo" )
    ( Lemma []
        ( StmtConnected Implication
            ( StmtConnected Conjunction
                ( StmtFormula
                    ( FormulaChain
                        ( ChainBase
                            ( ExprVar
                                ( NamedVar "x" ) :| []
                            ) Positive
                            ( RelationSymbol
                                ( Command "in" )
                            )
                            ( ExprVar
                                ( NamedVar "y" ) :| []
                            )
                        )
                    )
                )
                ( StmtFormula
                    ( FormulaChain
                        ( ChainBase
                            ( ExprVar
                                ( NamedVar "a" ) :| []
                            ) Positive
                            ( RelationSymbol
                                ( Command "in" )
                            )
                            ( ExprVar
                                ( NamedVar "b" ) :| []
                            )
                        )
                    )
                )
            )
            ( StmtFormula
                ( FormulaChain
                    ( ChainBase
                        ( ExprVar
                            ( NamedVar "x" ) :| []
                        ) Positive
                        ( RelationSymbol
                            ( Command "in" )
                        )
                        ( ExprVar
                            ( NamedVar "y" ) :| []
                        )
                    )
                )
            )
        )
    )
, BlockProof
    ( SourcePos
        { sourceName = "test/examples/proofassume.tex"
        , sourceLine = Pos 12
        , sourceColumn = Pos 1
        }
    )
    ( Assume
        ( StmtFormula
            ( FormulaChain
                ( ChainBase
                    ( ExprVar
                        ( NamedVar "a" ) :| []
                    ) Positive
                    ( RelationSymbol
                        ( Command "in" )
                    )
                    ( ExprVar
                        ( NamedVar "b" ) :| []
                    )
                )
            )
        )
        ( Assume
            ( StmtFormula
                ( FormulaChain
                    ( ChainBase
                        ( ExprVar
                            ( NamedVar "x" ) :| []
                        ) Positive
                        ( RelationSymbol
                            ( Command "in" )
                        )
                        ( ExprVar
                            ( NamedVar "y" ) :| []
                        )
                    )
                )
            )
            ( Have Nothing
                ( StmtFormula
                    ( FormulaChain
                        ( ChainBase
                            ( ExprVar
                                ( NamedVar "x" ) :| []
                            ) Positive
                            ( RelationSymbol
                                ( Command "in" )
                            )
                            ( ExprVar
                                ( NamedVar "y" ) :| []
                            )
                        )
                    )
                ) JustificationEmpty ( Qed JustificationEmpty )
            )
        )
    )
]