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
further
discussed
the
need
for
children
to
have
concrete
experiences
in
order
to
learn
.
He:O
further:O
discussed:O
the:O
need:O
for:O
children:O
to:O
have:O
concrete:O
experiences:O
in:O
order:O
to:O
learn:O
.:O