With no explanation, label each line with "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
All
flights
were
operated
by
Pace
Airlines
.
All:O
flights:O
were:O
operated:O
by:O
Pace:organization-company
Airlines:organization-company
.:O