With no explanation, label each line with "O", "building-airport", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-hospital" or "building-hotel" preceded by ":".
Service
between
Port
Columbus
and
the
other
eight
destinations
began
on
May
22
,
and
the
airline
also
announced
its
intention
to
expand
rapidly
.
Service:O
between:O
Port:building-airport
Columbus:building-airport
and:O
the:O
other:O
eight:O
destinations:O
began:O
on:O
May:O
22:O
,:O
and:O
the:O
airline:O
also:O
announced:O
its:O
intention:O
to:O
expand:O
rapidly:O
.:O