With no explanation, label each line with "O", "location-bodiesofwater", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
In
the
1970s
,
the
couple
took
a
trip
to
the
Pacific
basin
.
In:O
the:O
1970s:O
,:O
the:O
couple:O
took:O
a:O
trip:O
to:O
the:O
Pacific:location-bodiesofwater
basin:O
.:O