With no explanation, label each line with "location-GPE", "O", "person-scholar", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Shaughnessy
worked
closely
with
Alvina
Krause
,
an
assistant
professor
at
Northwestern
at
the
time
.
Shaughnessy:person-scholar
worked:O
closely:O
with:O
Alvina:person-scholar
Krause:person-scholar
,:O
an:O
assistant:O
professor:O
at:O
Northwestern:location-GPE
at:O
the:O
time:O
.:O