With no explanation, label each line with "other-livingthing", "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Therefore
,
vanGrouw
found
it
possible
that
the
dull
,
brownish-black
underparts
of
the
surviving
spotted
green
pigeon
specimen
represents
the
plumage
of
an
immature
bird
,
as
the
adults
of
similar
birds
have
stronger
and
more
glossy
iridescence
.
Therefore:O
,:O
vanGrouw:person-other
found:O
it:O
possible:O
that:O
the:O
dull:O
,:O
brownish-black:O
underparts:O
of:O
the:O
surviving:O
spotted:other-livingthing
green:other-livingthing
pigeon:other-livingthing
specimen:other-livingthing
represents:O
the:O
plumage:O
of:O
an:O
immature:O
bird:O
,:O
as:O
the:O
adults:O
of:O
similar:O
birds:O
have:O
stronger:O
and:O
more:O
glossy:O
iridescence:O
.:O