With no explanation, label each line with "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
At
this
time
,
he
met
his
future
wife
and
lifelong
collaborator
,
the
Russian-born
medical
trainee
Lydia
Felicine
.
At:O
this:O
time:O
,:O
he:O
met:O
his:O
future:O
wife:O
and:O
lifelong:O
collaborator:O
,:O
the:O
Russian-born:O
medical:O
trainee:O
Lydia:person-other
Felicine:person-other
.:O