With no explanation, label each line with "O", "location-island", "building-hotel", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
In
the
1960s
the
``
island
of
Cancún
``
was
only
occupied
at
certain
times
of
the
year
,
however
by
1974
the
first
hotel
was
opened
in
what
is
now
known
as
the
Hotel
Zone
.
In:O
the:O
1960s:O
the:O
``:O
island:O
of:O
Cancún:location-island
``:O
was:O
only:O
occupied:O
at:O
certain:O
times:O
of:O
the:O
year:O
,:O
however:O
by:O
1974:O
the:O
first:O
hotel:O
was:O
opened:O
in:O
what:O
is:O
now:O
known:O
as:O
the:O
Hotel:building-hotel
Zone:building-hotel
.:O