Two of the shuttles - Challenger and Columbia - were destroyed, one at launch, the other during the ride home. It cost $196billion over 40 years, ended the lives of 14 astronauts and managed to make less than half the flights promised. Infrasound, also known as low-frequency sound, describes sound waves with a frequency below the lower limit of human audibility. NASA's first space shuttle flight was in April 1981, the last was in July 2011. The space shuttle was sold to America as cheap, safe and reliable.
2 of the shuttles are also referred to as irreproliferation  and election  to add to the cost of making a shuttle.
( z0 refer :ARG1 ( z1 shuttle :quant 2 :ARG1-of ( z2 include :ARG2 ( z3 shuttle ) ) ) :ARG2 ( z4 and :op ( z5 proliferate :polarity - ) :op ( z6 elect :ARG1-of ( z7 add :ARG2 ( z8 cost :ARG1 ( z9 make :ARG1 ( z10 shuttle ) ) ) ) ) ) :mod ( z11 also ) )
(z0 / refer-01
    :ARG1 (z1 / shuttle
              :quant 2
              :ARG1-of (z2 / include-91
                           :ARG2 (z3 / shuttle)))
    :ARG2 (z4 / and
              :op1 (z5 / proliferate-01
                       :polarity -)
              :op2 (z6 / elect-01
                       :ARG1-of (z7 / add-02
                                    :ARG2 (z8 / cost-01
                                              :ARG1 (z9 / make-01
                                                        :ARG1 (z10 / shuttle))))))
    :mod (z11 / also))
2 of the shuttles are also referred to as irreproliferation and election to add to the cost of making a shuttle .
z1 :ARG1-of z2
z1 :quant 1
z2 :ARG2 z3
z0 :mod z11
z0 :ARG1 z1
z5 :polarity 0
z4 :op1 z5
z0 :ARG2 z4
z4 :op2 z6
z6 :ARG1-of z7
z7 :ARG2 z8
z8 :ARG1 z9
z9 :ARG1 z10