[ BlockLemma
    ( SourcePos
        { sourceName = "test/examples/no-reflexive-set.tex"
        , sourceLine = Pos 1
        , sourceColumn = Pos 1
        }
    )
    ( Marker "in_irrefl" )
    ( Lemma []
        ( StmtQuantPhrase
            ( QuantPhrase Universally NounPhrase ( [] )
                ( Noun
                    ( SgPl
                        { sg =
                            [ Just
                                ( Word "set" )
                            ]
                        , pl =
                            [ Just
                                ( Word "sets" )
                            ]
                        }
                    ) []
                )
                (
                    [ NamedVar "A" ]
                ) ( [] ) ( Nothing )
            )
            ( StmtFormula
                ( FormulaChain
                    ( ChainBase
                        ( ExprVar
                            ( NamedVar "A" ) :| []
                        ) Negative
                        ( RelationSymbol
                            ( Command "in" )
                        ) []
                        ( ExprVar
                            ( NamedVar "A" ) :| []
                        )
                    )
                )
            )
        )
    )
, BlockProof
    ( SourcePos
        { sourceName = "test/examples/no-reflexive-set.tex"
        , sourceLine = Pos 4
        , sourceColumn = Pos 1
        }
    )
    ( BySetInduction Nothing ( Qed JustificationEmpty ) )
]