With no explanation, label each line with "O", "location-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
He
employed
a
27-member
staff
to
cater
to
himself
,
his
wife
,
and
Helen
.
He:O
employed:O
a:O
27-member:O
staff:O
to:O
cater:O
to:O
himself:O
,:O
his:O
wife:O
,:O
and:O
Helen:location-other
.:O