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 ":".
While
in
Italy
he
visited
Naples
,
Venice
,
and
Florence
.
While:O
in:O
Italy:location-GPE
he:O
visited:O
Naples:location-GPE
,:O
Venice:location-GPE
,:O
and:O
Florence:location-GPE
.:O