With no explanation, label each line with "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
began
operating
in
1937
and
was
sold
to
Starwood
in
1998
by
ITT
Inc
.
.
Also
under
the
Sheraton
brand
are
seven
vacation
ownership
properties
.
It:O
began:O
operating:O
in:O
1937:O
and:O
was:O
sold:O
to:O
Starwood:organization-company
in:O
1998:O
by:O
ITT:organization-company
Inc:organization-company
.:organization-company
.:O
Also:O
under:O
the:O
Sheraton:organization-company
brand:O
are:O
seven:O
vacation:O
ownership:O
properties:O
.:O