With no explanation, label each line with "O", "event-protest", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Following
the
Velvet
Revolution
the
national
cultural
monument
designation
was
removed
from
the
commemorative
sites
of
the
workers
'
movement
,
however
some
of
these
buildings
are
still
protected
as
cultural
monuments
.
Following:O
the:O
Velvet:event-protest
Revolution:event-protest
the:O
national:O
cultural:O
monument:O
designation:O
was:O
removed:O
from:O
the:O
commemorative:O
sites:O
of:O
the:O
workers:O
':O
movement:O
,:O
however:O
some:O
of:O
these:O
buildings:O
are:O
still:O
protected:O
as:O
cultural:O
monuments:O
.:O