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 ":".
Neurons
that
utilize
acetylcholine
are
called
cholinergic
neurons
and
they
are
very
important
in
muscle
contraction
,
memory
,
and
learning
.
Neurons:O
that:O
utilize:O
acetylcholine:other-chemicalthing
are:O
called:O
cholinergic:O
neurons:O
and:O
they:O
are:O
very:O
important:O
in:O
muscle:O
contraction:O
,:O
memory:O
,:O
and:O
learning:O
.:O