With no explanation, label each line with "O", "organization-education", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
In
1944
she
became
head
of
the
North
London
Collegiate
School
until
retirement
in
1965
.
In:O
1944:O
she:O
became:O
head:O
of:O
the:O
North:organization-education
London:organization-education
Collegiate:organization-education
School:organization-education
until:O
retirement:O
in:O
1965:O
.:O