With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
This
was
a
raid
on
Stuttgart
on
1
March
1944
.
This:O
was:O
a:O
raid:O
on:O
Stuttgart:location-GPE
on:O
1:O
March:O
1944:O
.:O