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 ":".
Pillau
finally
fell
on
April
25
.
Pillau:location-GPE
finally:O
fell:O
on:O
April:O
25:O
.:O