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 ":".
It
was
formerly
named
Hamburg-Fuhlsbüttel
Airport
,
a
name
still
sometimes
used
.
It:O
was:O
formerly:O
named:O
Hamburg-Fuhlsbüttel:location-GPE
Airport:location-GPE
,:O
a:O
name:O
still:O
sometimes:O
used:O
.:O