With no explanation, label each line with "O", "building-sportsfacility", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
During
medical
school
,
Reitman
often
worked
as
the
house
doctor
at
sporting
events
at
the
Boston
Garden
.
During:O
medical:O
school:O
,:O
Reitman:person-other
often:O
worked:O
as:O
the:O
house:O
doctor:O
at:O
sporting:O
events:O
at:O
the:O
Boston:building-sportsfacility
Garden:building-sportsfacility
.:O