With no explanation, label each line with "other-livingthing", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Chimpanzees
have
been
found
to
have
group-specific
vocalizations
(
the
structure
of
chimpanzee
calls
vary
from
group
to
group
)
.
Chimpanzees:other-livingthing
have:O
been:O
found:O
to:O
have:O
group-specific:O
vocalizations:O
(:O
the:O
structure:O
of:O
chimpanzee:other-livingthing
calls:O
vary:O
from:O
group:O
to:O
group:O
):O
.:O