With no explanation, label each line with "O", "organization-company", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Rowland
,
who
worked
for
Mason
at
the
beginning
of
his
career
,
died
in
1946
during
the
design
process
.
Rowland:person-other
,:O
who:O
worked:O
for:O
Mason:organization-company
at:O
the:O
beginning:O
of:O
his:O
career:O
,:O
died:O
in:O
1946:O
during:O
the:O
design:O
process:O
.:O