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 ":".
Click
was
a
wholly
owned
subsidiary
of
Mexicana
de
Aviacion
.
Click:organization-company
was:O
a:O
wholly:O
owned:O
subsidiary:O
of:O
Mexicana:organization-company
de:organization-company
Aviacion:organization-company
.:O