With no explanation, label each line with "person-athlete", "location-mountain", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Castagna
and
Giampaolo
Casarotto
planned
to
climb
Broad
Peak
and
Gasherbrum
I
in
their
2009
expedition
.
Castagna:person-athlete
and:O
Giampaolo:person-athlete
Casarotto:person-athlete
planned:O
to:O
climb:O
Broad:location-mountain
Peak:location-mountain
and:O
Gasherbrum:location-mountain
I:location-mountain
in:O
their:O
2009:O
expedition:O
.:O