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 ":".
degree
from
Harvard
University
in
1987
.
degree:O
from:O
Harvard:organization-education
University:organization-education
in:O
1987:O
.:O