With no explanation, label each line with "O", "location-mountain", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
mountain
is
formed
through
the
late
Pleistocene
volcanisms
.
The:O
mountain:O
is:O
formed:O
through:O
the:O
late:O
Pleistocene:location-mountain
volcanisms:O
.:O