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 ":".
The
house
was
let
for
a
period
.
The:O
house:O
was:O
let:O
for:O
a:O
period:O
.:O