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 ":".
Their
twin
daughters
Jean
and
Alfie
were
born
in
1998
,
and
their
son
Blake
was
born
in
2001
.
Their:O
twin:O
daughters:O
Jean:person-other
and:O
Alfie:person-other
were:O
born:O
in:O
1998:O
,:O
and:O
their:O
son:O
Blake:person-other
was:O
born:O
in:O
2001:O
.:O