With no explanation, label each line with "O", "other-chemicalthing", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
However
it
was
still
considered
a
successful
proof
of
concept
of
the
potential
of
Y5
receptor
antagonists
as
possible
anti-obesity
agents
in
future
.
However:O
it:O
was:O
still:O
considered:O
a:O
successful:O
proof:O
of:O
concept:O
of:O
the:O
potential:O
of:O
Y5:other-chemicalthing
receptor:other-chemicalthing
antagonists:other-chemicalthing
as:O
possible:O
anti-obesity:O
agents:O
in:O
future:O
.:O