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 ":".
They
have
the
same
formula
CH3
(
CH2
)
nCOOH
,
with
variations
in
``
n
''
.
They:O
have:O
the:O
same:O
formula:O
CH3:other-chemicalthing
(:other-chemicalthing
CH2:other-chemicalthing
):other-chemicalthing
nCOOH:other-chemicalthing
,:O
with:O
variations:O
in:O
``:O
n:O
'':O
.:O