With no explanation, label each line with "location-GPE", "O", "building-airport", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-hospital" preceded by ":".
Two
former
airports
in
Tenerife
located
at
what
is
now
the
site
of
Tenerife
North
Airport
:
Two:O
former:O
airports:O
in:O
Tenerife:location-GPE
located:O
at:O
what:O
is:O
now:O
the:O
site:O
of:O
Tenerife:building-airport
North:building-airport
Airport:building-airport
::O