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 ":".
The
extensive
mire
of
Gors
Goch
was
flooded
by
the
raising
of
a
dam
between
1924
and
1928
to
form
Llyn
Trawsfynydd
to
enable
HEP
at
Maentwrog
.
The:O
extensive:O
mire:O
of:O
Gors:location-GPE
Goch:location-GPE
was:O
flooded:O
by:O
the:O
raising:O
of:O
a:O
dam:O
between:O
1924:O
and:O
1928:O
to:O
form:O
Llyn:building-other
Trawsfynydd:building-other
to:O
enable:O
HEP:O
at:O
Maentwrog:location-GPE
.:O