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 ":".
Laughlin
was
unable
to
keep
his
balance
and
had
the
throw
the
ball
backwards
to
keep
it
in
the
boundary
,
and
he
threw
it
30
metres
backwards
before
running
over
the
rope
.
Laughlin:O
was:O
unable:O
to:O
keep:O
his:O
balance:O
and:O
had:O
the:O
throw:O
the:O
ball:O
backwards:O
to:O
keep:O
it:O
in:O
the:O
boundary:O
,:O
and:O
he:O
threw:O
it:O
30:O
metres:O
backwards:O
before:O
running:O
over:O
the:O
rope:O
.:O