With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
took
place
in
Mons
,
Belgium
between
3
and
9
October
2011
.
It:O
took:O
place:O
in:O
Mons:location-GPE
,:O
Belgium:location-GPE
between:O
3:O
and:O
9:O
October:O
2011:O
.:O