With no explanation, label each line with "organization-showorganization", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
In
the
early
1960s
,
a
number
of
Polish
composers
formed
the
Polish
Composers
'
School
,
characterized
by
the
use
of
sonorism
and
dodecaphonism
.
In:O
the:O
early:O
1960s:O
,:O
a:O
number:O
of:O
Polish:O
composers:O
formed:O
the:O
Polish:organization-showorganization
Composers:organization-showorganization
':organization-showorganization
School:organization-showorganization
,:O
characterized:O
by:O
the:O
use:O
of:O
sonorism:O
and:O
dodecaphonism:O
.:O