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 ":".
An
estimated
800
people
were
involved
in
the
actual
fighting
,
with
at
least
10,000
spectators
egging
them
on
.
An:O
estimated:O
800:O
people:O
were:O
involved:O
in:O
the:O
actual:O
fighting:O
,:O
with:O
at:O
least:O
10,000:O
spectators:O
egging:O
them:O
on:O
.:O