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 ":".
When
molecules
are
hydroxylated
,
they
become
more
water‐soluble
,
which
affects
their
structure
and
function
.
When:O
molecules:O
are:O
hydroxylated:O
,:O
they:O
become:O
more:O
water‐soluble:O
,:O
which:O
affects:O
their:O
structure:O
and:O
function:O
.:O