With no explanation, label each line with "O", "other-biologything", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
In
influenza
A
virus
,
M2
protein
unit
consists
of
three
protein
segments
comprising
97
amino
acid
residues
:
(
i
)
an
extracellular
N-terminal
domain
(
residues
1–23
)
;
(
ii
)
a
transmembrane
segment
(
TMS
)
(
residues
24–46
)
;
(
iii
)
an
intracellular
C-terminal
domain
(
residues
47–97
)
.
In:O
influenza:O
A:O
virus:O
,:O
M2:other-biologything
protein:other-biologything
unit:O
consists:O
of:O
three:O
protein:O
segments:O
comprising:O
97:other-biologything
amino:other-biologything
acid:other-biologything
residues:O
::O
(:O
i:O
):O
an:O
extracellular:O
N-terminal:O
domain:O
(:O
residues:O
1–23:O
):O
;:O
(:O
ii:O
):O
a:O
transmembrane:O
segment:O
(:O
TMS:O
):O
(:O
residues:O
24–46:O
):O
;:O
(:O
iii:O
):O
an:O
intracellular:O
C-terminal:O
domain:O
(:O
residues:O
47–97:O
):O
.:O