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 ":".
The
wide
variety
of
substitutes
used
in
organophosphate
esters
results
in
great
variations
in
physicochemical
properties
,
varying
from
highly
polar
to
very
hydrolysis
resistant
characteristics
.
The:O
wide:O
variety:O
of:O
substitutes:O
used:O
in:O
organophosphate:O
esters:O
results:O
in:O
great:O
variations:O
in:O
physicochemical:O
properties:O
,:O
varying:O
from:O
highly:O
polar:O
to:O
very:O
hydrolysis:O
resistant:O
characteristics:O
.:O