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 ":".
He
was
thus
able
to
return
to
Milan
through
Ragusa
and
Naples
.
He:O
was:O
thus:O
able:O
to:O
return:O
to:O
Milan:location-GPE
through:O
Ragusa:location-GPE
and:O
Naples:location-GPE
.:O