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 ":".
At
high
temperatures
above
500°C
silicon
tetrafluoride
can
react
with
phosphorus
trichloride
to
yield
some
SiClF3
.
At:O
high:O
temperatures:O
above:O
500°C:O
silicon:other-chemicalthing
tetrafluoride:other-chemicalthing
can:O
react:O
with:O
phosphorus:other-chemicalthing
trichloride:other-chemicalthing
to:O
yield:O
some:O
SiClF3:other-chemicalthing
.:O