With no explanation, label each line with "O", "building-restaurant", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Six
months
later
,
Nathan
's
capitulated
and
left
the
block
.
Six:O
months:O
later:O
,:O
Nathan:building-restaurant
's:building-restaurant
capitulated:O
and:O
left:O
the:O
block:O
.:O