With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
also
operated
a
London
outlet
.
It:O
also:O
operated:O
a:O
London:location-GPE
outlet:O
.:O