With no explanation, label each line with "organization-showorganization", "O", "person-artist/author", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
At
the
time
,
the
Bluegrass
Boys
included
vocalist
and
guitarist
Lester
Flatt
and
banjoist
Earl
Scruggs
,
who
later
formed
their
own
bluegrass
band
,
the
Foggy
Mountain
Boys
.
At:O
the:O
time:O
,:O
the:organization-showorganization
Bluegrass:organization-showorganization
Boys:organization-showorganization
included:O
vocalist:O
and:O
guitarist:O
Lester:person-artist/author
Flatt:person-artist/author
and:O
banjoist:O
Earl:person-artist/author
Scruggs:person-artist/author
,:O
who:O
later:O
formed:O
their:O
own:O
bluegrass:O
band:O
,:O
the:O
Foggy:organization-showorganization
Mountain:organization-showorganization
Boys:organization-showorganization
.:O