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 ":".
It
flows
into
the
Pacific
Ocean
.
It:O
flows:O
into:O
the:O
Pacific:location-bodiesofwater
Ocean:location-bodiesofwater
.:O