With no explanation, label each line with "O", "other-law", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
makes
similar
revisions
to
the
Controlled
Substance
Import
and
Export
Act
at
21
U.S.C
.
It:O
makes:O
similar:O
revisions:O
to:O
the:O
Controlled:other-law
Substance:other-law
Import:other-law
and:other-law
Export:other-law
Act:other-law
at:O
21:O
U.S.C:O
.:O