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. 
( z1 sustain :ARG0 ( z2 kid :ARG1-of ( z3 include :ARG3 "1/5" :ARG2 ( z4 kid :mod ( z5 all ) ) ) ) :ARG1 ( z6 injure :ARG1 z2 :ARG1-of ( z7 serious :ARG2-of ( z8 have-degree :ARG1 z6 :ARG3 ( z9 enough ) :ARG6 ( z10 require :ARG0 z6 :ARG1 ( z11 and :op ( z12 attend :mod ( z13 medicine ) ) :op ( z14 absent :ARG1 z2 :ARG2 ( z15 school ) ) :op ( z16 rest :location ( z17 bed ) ) ) ) ) ) ) )