With no explanation, label each line with "location-GPE", "O", "building-hospital", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
When
she
arrived
she
briefly
resided
at
St.
Thomas
's
Hospital
in
London
.
When:O
she:O
arrived:O
she:O
briefly:O
resided:O
at:O
St.:building-hospital
Thomas:building-hospital
's:building-hospital
Hospital:building-hospital
in:O
London:location-GPE
.:O