With no explanation, label each line with "O", "location-other", "person-actor", "art-other", "art-broadcastprogram", "art-film", "art-music", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
After
a
year
's
run
in
``
Dial
M
for
Murder
``
in
1952
,
she
continued
to
work
in
the
theatre
for
20
years
her
last
West
End
appearance
being
in
``
A
Voyage
Round
My
Father
``
,
which
co-starred
her
old
friend
,
Michael
Redgrave
.
After:O
a:O
year:O
's:O
run:O
in:O
``:O
Dial:art-other
M:art-other
for:art-other
Murder:art-other
``:O
in:O
1952:O
,:O
she:O
continued:O
to:O
work:O
in:O
the:O
theatre:O
for:O
20:O
years:O
her:O
last:O
West:location-other
End:location-other
appearance:O
being:O
in:O
``:O
A:art-other
Voyage:art-other
Round:art-other
My:art-other
Father:art-other
``:O
,:O
which:O
co-starred:O
her:O
old:O
friend:O
,:O
Michael:person-actor
Redgrave:person-actor
.:O