With no explanation, label each line with "O", "other-biologything", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
In
``
Escherichia
coli
``
,
the
reaction
is
a
two
step
process
.
In:O
``:O
Escherichia:other-biologything
coli:other-biologything
``:O
,:O
the:O
reaction:O
is:O
a:O
two:O
step:O
process:O
.:O