With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
In
the
course
of
time
,
new
courses
and
majors
gradually
developed
.
In:O
the:O
course:O
of:O
time:O
,:O
new:O
courses:O
and:O
majors:O
gradually:O
developed:O
.:O