With no explanation, label each line with "location-GPE", "O", "event-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
1967
Detroit
riot
was
one
of
the
largest
and
most
violent
of
a
number
of
urban
insurrections
that
swept
the
U.S
.
between
1964
and
1968
.
The:O
1967:O
Detroit:event-other
riot:event-other
was:O
one:O
of:O
the:O
largest:O
and:O
most:O
violent:O
of:O
a:O
number:O
of:O
urban:O
insurrections:O
that:O
swept:O
the:O
U.S:location-GPE
.:O
between:O
1964:O
and:O
1968:O
.:O