With no explanation, label each line with "location-GPE", "O", "building-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Chiapas
:
DIE
Wasserbahn
opened
on
1
April
2014
.
Chiapas:location-GPE
::O
DIE:building-other
Wasserbahn:building-other
opened:O
on:O
1:O
April:O
2014:O
.:O