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 ":".
These
were
the
first
of
many
productions
of
Shepard
's
work
at
La
MaMa
during
the
1960s
,
1970s
,
and
1980s
.
These:O
were:O
the:O
first:O
of:O
many:O
productions:O
of:O
Shepard:person-artist/author
's:O
work:O
at:O
La:organization-showorganization
MaMa:organization-showorganization
during:O
the:O
1960s:O
,:O
1970s:O
,:O
and:O
1980s:O
.:O