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
patent
came
to
trial
in
1991
in
``
Intex
v.
Hall
/wbx
''
.
The:O
patent:O
came:O
to:O
trial:O
in:O
1991:O
in:O
``:O
Intex:O
v.:O
Hall:O
/wbx:O
'':O
.:O