With no explanation, label each line with "O", "other-chemicalthing", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
In
1925
,
Hall
ingested
tetrachloroethylene
(
once
the
most
common
dry
cleaning
fluid
)
for
the
same
purpose
.
In:O
1925:O
,:O
Hall:person-other
ingested:O
tetrachloroethylene:other-chemicalthing
(:O
once:O
the:O
most:O
common:O
dry:other-chemicalthing
cleaning:other-chemicalthing
fluid:other-chemicalthing
):O
for:O
the:O
same:O
purpose:O
.:O