With no explanation, label each line with "O", "location-bodiesofwater", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
southern
and
northern
canals
are
parts
of
the
Grand
Canal
.
The:O
southern:O
and:O
northern:O
canals:O
are:O
parts:O
of:O
the:O
Grand:location-bodiesofwater
Canal:location-bodiesofwater
.:O