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 ":".
Chloroform
is
also
anticipated
to
be
a
human
carcinogen
.
Chloroform:other-chemicalthing
is:O
also:O
anticipated:O
to:O
be:O
a:O
human:O
carcinogen:O
.:O