With no explanation, label each line with "O", "location-mountain", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
is
lies
at
the
centre
of
the
main
Aran
ridge
,
situated
between
Aran
Fawddwy
to
the
south
and
Aran
Benllyn
to
the
north
.
It:O
is:O
lies:O
at:O
the:O
centre:O
of:O
the:O
main:O
Aran:location-mountain
ridge:location-mountain
,:O
situated:O
between:O
Aran:location-mountain
Fawddwy:location-mountain
to:O
the:O
south:O
and:O
Aran:location-mountain
Benllyn:location-mountain
to:O
the:O
north:O
.:O