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 ":".
Horseback
riding
is
also
popular
;
the
famed
Spanish
Riding
School
of
Vienna
is
located
in
Vienna
.
Horseback:O
riding:O
is:O
also:O
popular:O
;:O
the:O
famed:O
Spanish:organization-education
Riding:organization-education
School:organization-education
of:organization-education
Vienna:organization-education
is:O
located:O
in:O
Vienna:organization-education
.:O