With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
Crowdsourced
data
available
from
photo-sharing
services
have
the
potentiality
of
tracking
places
.
Crowdsourced:O
data:O
available:O
from:O
photo-sharing:O
services:O
have:O
the:O
potentiality:O
of:O
tracking:O
places:O
.:O