With no explanation, label each line with "location-GPE", "O", "location-bodiesofwater", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Gradually
,
the
trans-
Atlantic
trade
was
becoming
more
and
more
important
in
the
activities
of
Cardiff
shipowners
.
Gradually:O
,:O
the:O
trans-:O
Atlantic:location-bodiesofwater
trade:O
was:O
becoming:O
more:O
and:O
more:O
important:O
in:O
the:O
activities:O
of:O
Cardiff:location-GPE
shipowners:O
.:O