With no explanation, label each line with "location-GPE", "O", "building-other", "location-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
Uptown
is
Houston
's
second-largest
business
district
and
home
to
the
world-famous
Williams
Tower
.
Uptown:location-other
is:O
Houston:location-GPE
's:O
second-largest:O
business:O
district:O
and:O
home:O
to:O
the:O
world-famous:O
Williams:building-other
Tower:building-other
.:O