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
1991
he
became
the
instiute
's
vice
president
;
he
became
acting
president
1999
and
was
formally
appointed
as
the
institute
's
permanent
president
in
2001
.
In:O
1991:O
he:O
became:O
the:O
instiute:O
's:O
vice:O
president:O
;:O
he:O
became:O
acting:O
president:O
1999:O
and:O
was:O
formally:O
appointed:O
as:O
the:O
institute:O
's:O
permanent:O
president:O
in:O
2001:O
.:O