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
was
listed
on
the
London
Stock
Exchange
and
was
a
constituent
of
the
FTSE
100
Index
.
It:O
was:O
listed:O
on:O
the:O
London:organization-company
Stock:organization-company
Exchange:organization-company
and:O
was:O
a:O
constituent:O
of:O
the:O
FTSE:organization-company
100:O
Index:O
.:O