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 ":".
Just
upstream
along
the
backwater
is
a
weir
next
to
Sonning
Lock
on
the
main
navigable
branch
of
the
river
.
Just:O
upstream:O
along:O
the:O
backwater:O
is:O
a:O
weir:O
next:O
to:O
Sonning:location-GPE
Lock:location-GPE
on:O
the:O
main:O
navigable:O
branch:O
of:O
the:O
river:O
.:O