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 ":".
He
also
worked
on
the
theories
of
liquid
crystals
and
the
electrical
properties
of
ice
.
He:O
also:O
worked:O
on:O
the:O
theories:O
of:O
liquid:O
crystals:O
and:O
the:O
electrical:O
properties:O
of:O
ice:O
.:O