With no explanation, label each line with "location-GPE", "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Robert
Bruce
of
Clackmannan
was
the
son
of
Sir
James
Bruce
and
a
direct
descendant
of
Sir
Thomas
Bruce
,
1st
Baron
of
Clackmannan
.
Robert:person-other
Bruce:person-other
of:O
Clackmannan:location-GPE
was:O
the:O
son:O
of:O
Sir:O
James:person-other
Bruce:person-other
and:O
a:O
direct:O
descendant:O
of:O
Sir:O
Thomas:person-other
Bruce:person-other
,:O
1st:O
Baron:O
of:O
Clackmannan:location-GPE
.:O