With no explanation, label each line with "O", "location-bodiesofwater", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Underwater
sea-grass
beds
of
Posidonia
oceanica
,
which
is
particularly
important
for
the
development
of
other
organisms
and
the
retention
and
cycling
of
suspended
particles
and
various
substances
in
the
marine
environment
,
are
widely
spread
and
in
good
condition
.
Underwater:O
sea-grass:O
beds:O
of:O
Posidonia:location-bodiesofwater
oceanica:O
,:O
which:O
is:O
particularly:O
important:O
for:O
the:O
development:O
of:O
other:O
organisms:O
and:O
the:O
retention:O
and:O
cycling:O
of:O
suspended:O
particles:O
and:O
various:O
substances:O
in:O
the:O
marine:O
environment:O
,:O
are:O
widely:O
spread:O
and:O
in:O
good:O
condition:O
.:O