With no explanation, label each line with "O", "other-chemicalthing", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Nitrocellulose
was
briefly
known
as
``
mother-in-law
silk
''
.
Nitrocellulose:other-chemicalthing
was:O
briefly:O
known:O
as:O
``:O
mother-in-law:O
silk:O
'':O
.:O