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 ":".
Waterborne
toilets
and
electricity
were
installed
in
the
school
.
Waterborne:O
toilets:O
and:O
electricity:O
were:O
installed:O
in:O
the:O
school:O
.:O