With no explanation, label each line with "O", "product-software", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
In
computational
geometry
,
a
CC
system
or
counterclockwise
system
is
a
ternary
relation
introduced
by
Donald
Knuth
to
model
the
clockwise
ordering
of
triples
of
points
in
general
position
in
the
Euclidean
plane
.
In:O
computational:O
geometry:O
,:O
a:O
CC:product-software
system:product-software
or:O
counterclockwise:O
system:O
is:O
a:O
ternary:O
relation:O
introduced:O
by:O
Donald:person-other
Knuth:person-other
to:O
model:O
the:O
clockwise:O
ordering:O
of:O
triples:O
of:O
points:O
in:O
general:O
position:O
in:O
the:O
Euclidean:O
plane:O
.:O