With no explanation, label each line with "O", "other-biologything", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Whereas
neurotrophic
factors
within
the
neurotrophin
family
commonly
have
a
protein
tyrosine
kinase
receptor
(
Trk
)
,
Neurotrophin-3
(
NT-3
)
has
the
unique
receptor
,
TrkC
.
Whereas:O
neurotrophic:O
factors:O
within:O
the:O
neurotrophin:O
family:O
commonly:O
have:O
a:O
protein:other-biologything
tyrosine:other-biologything
kinase:other-biologything
receptor:other-biologything
(:O
Trk:other-biologything
):O
,:O
Neurotrophin-3:other-biologything
(:O
NT-3:other-biologything
):O
has:O
the:O
unique:O
receptor:O
,:O
TrkC:other-biologything
.:O