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 ":".
Methyl
ethyl
ketone
peroxide
(
MEKP
)
is
an
organic
peroxide
,
a
high
explosive
similar
to
acetone
peroxide
.
Methyl:other-chemicalthing
ethyl:other-chemicalthing
ketone:other-chemicalthing
peroxide:other-chemicalthing
(:O
MEKP:other-chemicalthing
):O
is:O
an:O
organic:O
peroxide:O
,:O
a:O
high:O
explosive:O
similar:O
to:O
acetone:other-chemicalthing
peroxide:other-chemicalthing
.:O