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 ":".
It
can
bind
to
5
'
untranslated
region
of
``
virB
``
transcriptional
regulator
BabR
and
mediate
its
effects
on
``
babR
``
expression
.
It:O
can:O
bind:O
to:O
5:O
':O
untranslated:O
region:O
of:O
``:O
virB:other-biologything
``:O
transcriptional:O
regulator:O
BabR:other-biologything
and:O
mediate:O
its:O
effects:O
on:O
``:O
babR:other-biologything
``:O
expression:O
.:O