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 ":".
They
were
at
the
Théâtre
du
Gymnase
Marie
Bell
at
the
beginning
of
2011
.
They:O
were:O
at:O
the:O
Théâtre:building-theater
du:building-theater
Gymnase:building-theater
Marie:building-theater
Bell:building-theater
at:O
the:O
beginning:O
of:O
2011:O
.:O