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 ":".
For
example
,
the
commercially
important
(
C6H11
)
3SnOH
converts
at
200
°C
into
the
distannoxane
:
For:O
example:O
,:O
the:O
commercially:O
important:O
(:other-chemicalthing
C6H11:other-chemicalthing
):other-chemicalthing
3SnOH:other-chemicalthing
converts:O
at:O
200:O
°C:O
into:O
the:O
distannoxane:other-chemicalthing
::O