With no explanation, label each line with "location-GPE", "O", "building-other", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
After
a
trip
to
Ireland
under
Thomas
of
Lancaster
in
1408
he
joined
forces
with
his
brother
John
to
recapture
Harlech
Castle
from
Owain
Glyndŵr
later
in
the
year
.
After:O
a:O
trip:O
to:O
Ireland:location-GPE
under:O
Thomas:person-other
of:person-other
Lancaster:person-other
in:O
1408:O
he:O
joined:O
forces:O
with:O
his:O
brother:O
John:person-other
to:O
recapture:O
Harlech:building-other
Castle:building-other
from:O
Owain:person-other
Glyndŵr:person-other
later:O
in:O
the:O
year:O
.:O