With no explanation, label each line with "O", "person-scholar", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Coser
made
a
number
of
contributions
in
many
of
the
institutions
she
worked
at
.
Coser:person-scholar
made:O
a:O
number:O
of:O
contributions:O
in:O
many:O
of:O
the:O
institutions:O
she:O
worked:O
at:O
.:O