Every year, about a quarter of all children sustain an injury serious enough to require medical attention, school absences, and/or bed rest.
A fifth of all kids sustain an injury serious enough to require medical attention, school absences, and/or bed rest.
It said 1/4 and my statement said 1/5. The statement was wrong. 
( z0 sustain :ARG0 ( z1 kid :ARG1-of ( z2 include :ARG2 ( z3 kid :mod ( z4 all ) ) :ARG3 "1/5" ) ) :ARG1 ( z5 injure :ARG1 z1 :ARG1-of ( z6 have-degree :ARG2 ( z7 serious :ARG1 z5 ) :ARG3 ( z8 enough ) :ARG6 ( z9 require :ARG0 z5 :ARG1 ( z10 and :op ( z11 attend :ARG1 z1 :mod ( z12 medicine ) ) :op ( z13 absent :ARG1 z1 :ARG2 ( z14 school ) ) :op ( z15 rest :ARG2 ( z16 bed ) ) ) ) ) ) )
(z0 / sustain-01
    :ARG0 (z1 / kid
              :ARG1-of (z2 / include-91
                           :ARG2 (z3 / kid
                                     :mod (z4 / all))
                           :ARG3 "1/5"))
    :ARG1 (z5 / injure-01
              :ARG1 z1
              :ARG1-of (z6 / have-degree-91
                           :ARG2 (z7 / serious-02
                                     :ARG1 z5)
                           :ARG3 (z8 / enough)
                           :ARG6 (z9 / require-01
                                     :ARG0 z5
                                     :ARG1 (z10 / and
                                                :op1 (z11 / attend-02
                                                          :ARG1 z1
                                                          :mod (z12 / medicine))
                                                :op2 (z13 / absent-01
                                                          :ARG1 z1
                                                          :ARG2 (z14 / school))
                                                :op3 (z15 / rest-01
                                                          :ARG2 (z16 / bed)))))))
A fifth of all kids sustain an injury serious enough to require medical attention , school absences , and / or bed rest .
z2 :ARG3 0
z1 :ARG1-of z2
z3 :mod z4
z2 :ARG2 z3
z0 :ARG0 z1
z0 :ARG1 z5
z5 :ARG1 z1
z7 :ARG1 z5
z6 :ARG2 z7
z5 :ARG1-of z6
z6 :ARG3 z8
z6 :ARG6 z9
z9 :ARG0 z5
z11 :mod z12
z11 :ARG1 z1
z10 :op1 z11
z9 :ARG1 z10
z13 :ARG2 z14
z10 :op2 z13
z13 :ARG1 z1
z15 :ARG2 z16
z10 :op3 z15