With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
The
result
is
a
copolymer
of
the
two
previously
prepared
polymers
.
The:O
result:O
is:O
a:O
copolymer:O
of:O
the:O
two:O
previously:O
prepared:O
polymers:O
.:O