With no explanation, label each line with "location-GPE", "O", "organization-religion", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
Triratna
community
maintains
a
retreat
centre
at
Balquhidder
in
the
Trossachs
.
The:O
Triratna:organization-religion
community:organization-religion
maintains:O
a:O
retreat:O
centre:O
at:O
Balquhidder:location-GPE
in:O
the:O
Trossachs:location-GPE
.:O