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 ":".
Thus
,
owing
to
this
hydrophobicity
OPEs
are
presumptively
bioaccumulated
and
biomagnified
in
aquatic
ecosystems
.
Thus:O
,:O
owing:O
to:O
this:O
hydrophobicity:O
OPEs:other-chemicalthing
are:O
presumptively:O
bioaccumulated:O
and:O
biomagnified:O
in:O
aquatic:O
ecosystems:O
.:O