With no explanation, label each line with "O", "other-chemicalthing", "other-medical", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
While
chloroform
has
no
known
environmental
hazards
,
large
amounts
of
exposure
to
chloroform
can
cause
alterations
in
the
mind
,
such
as
depression
and
irritability
.
While:O
chloroform:other-chemicalthing
has:O
no:O
known:O
environmental:O
hazards:O
,:O
large:O
amounts:O
of:O
exposure:O
to:O
chloroform:other-chemicalthing
can:O
cause:O
alterations:O
in:O
the:O
mind:O
,:O
such:O
as:O
depression:other-medical
and:O
irritability:other-medical
.:O