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 ":".
On
April
22
,
2018
,
the
couple
had
their
first
child
,
a
baby
girl
.
On:O
April:O
22:O
,:O
2018:O
,:O
the:O
couple:O
had:O
their:O
first:O
child:O
,:O
a:O
baby:O
girl:O
.:O