With no explanation, label each line with "location-GPE", "O", "person-director", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Along
with
his
brother
Roy
Aitken
(
1882-1978
)
,
he
helped
pioneer
the
production
and
distribution
of
movies
during
the
early
silent
film
era
in
the
United
States
.
Along:O
with:O
his:O
brother:O
Roy:person-director
Aitken:person-director
(:O
1882-1978:O
):O
,:O
he:O
helped:O
pioneer:O
the:O
production:O
and:O
distribution:O
of:O
movies:O
during:O
the:O
early:O
silent:O
film:O
era:O
in:O
the:O
United:location-GPE
States:location-GPE
.:O