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 ":".
End
plate
potentials
are
produced
almost
entirely
by
the
neurotransmitter
acetylcholine
in
skeletal
muscle
.
End:O
plate:O
potentials:O
are:O
produced:O
almost:O
entirely:O
by:O
the:O
neurotransmitter:other-chemicalthing
acetylcholine:other-chemicalthing
in:O
skeletal:O
muscle:O
.:O