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 ":".
Sonic
hedgehog
(
SHH
)
are
morphogens
that
are
essential
to
early
patterning
in
the
developing
embryo
.
Sonic:other-biologything
hedgehog:other-biologything
(:O
SHH:other-biologything
):O
are:O
morphogens:O
that:O
are:O
essential:O
to:O
early:O
patterning:O
in:O
the:O
developing:O
embryo:O
.:O