With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
Like
generations
of
Astors
before
him
,
he
also
made
millions
in
real
estate
.
Like:O
generations:O
of:O
Astors:O
before:O
him:O
,:O
he:O
also:O
made:O
millions:O
in:O
real:O
estate:O
.:O