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 ":".
Some
isomers
of
DHEA
are
1-dehydroepiandrosterone
(
1-androsterone
)
and
4-dehydroepiandrosterone
.
Some:O
isomers:O
of:O
DHEA:other-chemicalthing
are:O
1-dehydroepiandrosterone:other-chemicalthing
(:O
1-androsterone:other-chemicalthing
):O
and:O
4-dehydroepiandrosterone:other-chemicalthing
.:O