NASA's first space shuttle flight was in April 1981, the last was in July 2011. The pits also are the perfect size for cell storage, according to Thanga. But I think the same complexity is what makes them beautiful, he said. Two of the shuttles - Challenger and Columbia - were destroyed, one at launch, the other during the ride home. Its not crazy big, Thanga insisted.
the shuttle was very light and easy to derail.
( z0 and :op ( z1 light :ARG1 ( z2 shuttle ) :degree ( z3 very ) ) :op ( z4 easy :ARG1 ( z5 derail :ARG1 z2 ) ) )
(z0 / and
    :op1 (z1 / light-06
             :ARG1 (z2 / shuttle)
             :degree (z3 / very))
    :op2 (z4 / easy-05
             :ARG1 (z5 / derail-01
                       :ARG1 z2)))
the shuttle was very light and easy to derail .
z1 :degree z3
z1 :ARG1 z2
z0 :op1 z1
z0 :op2 z4
z4 :ARG1 z5
z5 :ARG1 z2