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 ":".
Sugar
cane
forms
a
crucial
pillar
of
the
economy
.
Sugar:O
cane:O
forms:O
a:O
crucial:O
pillar:O
of:O
the:O
economy:O
.:O