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 ":".
From
1968
to
1975
,
he
was
professor
and
head
of
the
department
of
educational
administration
at
the
University
of
Saskatchewan
.
From:O
1968:O
to:O
1975:O
,:O
he:O
was:O
professor:O
and:O
head:O
of:O
the:O
department:O
of:O
educational:O
administration:O
at:O
the:O
University:organization-education
of:organization-education
Saskatchewan:organization-education
.:O