[ BeginEnv "abbreviation"
, Label "equalparam"
, BeginEnv "math"
, Variable "x"
, Command "EQUAL"
, InvisibleBraceL
, Variable "y"
, InvisibleBraceR
, Variable "z"
, EndEnv "math"
, Word "iff"
, BeginEnv "math"
, Variable "x"
, Symbol "="
, Variable "z"
, EndEnv "math"
, Symbol "."
, EndEnv "abbreviation"
, BeginEnv "proposition"
, Label "dummy_abbr_test_noun"
, Word "for"
, Word "all"
, BeginEnv "math"
, Variable "x"
, EndEnv "math"
, Word "we"
, Word "have"
, BeginEnv "math"
, Variable "x"
, Command "EQUAL"
, InvisibleBraceL
, Variable "y"
, InvisibleBraceR
, Variable "x"
, EndEnv "math"
, Symbol "."
, EndEnv "proposition"
]