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 ":".
Although
the
series
was
a
sweep
,
it
was
a
much
more
intense
and
close-fought
series
than
anyone
had
expected
,
as
all
four
games
were
decided
by
one
goal
,
two
went
to
overtime
,
and
the
other
two
saw
the
winning
goal
scored
in
the
third
period
.
Although:O
the:O
series:O
was:O
a:O
sweep:O
,:O
it:O
was:O
a:O
much:O
more:O
intense:O
and:O
close-fought:O
series:O
than:O
anyone:O
had:O
expected:O
,:O
as:O
all:O
four:O
games:O
were:O
decided:O
by:O
one:O
goal:O
,:O
two:O
went:O
to:O
overtime:O
,:O
and:O
the:O
other:O
two:O
saw:O
the:O
winning:O
goal:O
scored:O
in:O
the:O
third:O
period:O
.:O