With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
In
March
,
after
the
Easter
,
he
tried
to
escape
again
.
In:O
March:O
,:O
after:O
the:O
Easter:O
,:O
he:O
tried:O
to:O
escape:O
again:O
.:O