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 ":".
Pipoxizine
(
)
is
a
first-generation
antihistamine
as
well
as
serotonin
antagonist
of
the
diphenylmethylpiperazine
group
related
to
hydroxyzine
.
Pipoxizine:other-chemicalthing
(:O
):O
is:O
a:O
first-generation:O
antihistamine:O
as:O
well:O
as:O
serotonin:O
antagonist:O
of:O
the:O
diphenylmethylpiperazine:other-chemicalthing
group:O
related:O
to:O
hydroxyzine:other-chemicalthing
.:O