With no explanation, label each line with "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
His
brothers
Chagatai
Khan
and
Tolui
and
his
nephew
Batu
Khan
further
extended
this
network
.
His:O
brothers:O
Chagatai:person-other
Khan:person-other
and:O
Tolui:person-other
and:O
his:O
nephew:O
Batu:person-other
Khan:person-other
further:O
extended:O
this:O
network:O
.:O