With no explanation, label each line with "product-other", "product-car", "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
The
Dream
Chaser
design
is
derived
from
NASA
's
HL-20
Personnel
Launch
System
spaceplane
concept
from
the
1990s
,
which
in
turn
is
descended
from
over
20,000
hours
and
six
decades
of
experimental
lifting
body
vehicles
,
including
the
X-20
Dyna-Soar
,
Northrop
M2-F2
,
Northrop
M2-F3
,
Northrop
HL-10
,
Martin
X-24A
and
X-24B
,
and
Martin
X-23
PRIME
.
The:O
Dream:product-car
Chaser:product-car
design:O
is:O
derived:O
from:O
NASA:organization-other
's:organization-other
HL-20:product-other
Personnel:product-other
Launch:product-other
System:product-other
spaceplane:O
concept:O
from:O
the:O
1990s:O
,:O
which:O
in:O
turn:O
is:O
descended:O
from:O
over:O
20,000:O
hours:O
and:O
six:O
decades:O
of:O
experimental:O
lifting:O
body:O
vehicles:O
,:O
including:O
the:O
X-20:product-car
Dyna-Soar:product-car
,:O
Northrop:product-car
M2-F2:product-car
,:O
Northrop:product-car
M2-F3:product-car
,:O
Northrop:product-car
HL-10:product-car
,:O
Martin:product-car
X-24A:product-car
and:O
X-24B:product-car
,:O
and:O
Martin:product-car
X-23:product-car
PRIME:product-car
.:O