With no explanation, label each line with "O", "other-language", "person-artist/author", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
During
filming
,
Berkeley
overheard
Rogers
speaking
in
Pig
Latin
,
and
immediately
decided
to
add
a
Pig
Latin
verse
to
the
song
.
During:O
filming:O
,:O
Berkeley:person-other
overheard:O
Rogers:person-artist/author
speaking:O
in:O
Pig:other-language
Latin:other-language
,:O
and:O
immediately:O
decided:O
to:O
add:O
a:O
Pig:other-language
Latin:other-language
verse:O
to:O
the:O
song:O
.:O