With no explanation, label each line with "O", "building-theater", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
From
1978
he
was
an
artistic
advisor
and
director
at
Nationaltheatret
.
From:O
1978:O
he:O
was:O
an:O
artistic:O
advisor:O
and:O
director:O
at:O
Nationaltheatret:building-theater
.:O