With no explanation, label each line with "O", "other-chemicalthing", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Tetramethylethylenediamine
is
the
diamine
analogue
of
the
diphosphine
dmpe
.
Tetramethylethylenediamine:other-chemicalthing
is:O
the:O
diamine:O
analogue:O
of:O
the:O
diphosphine:other-chemicalthing
dmpe:other-chemicalthing
.:O