Mowing a Frog<br>At some point, my parents thought I was old enough to mow the lawn. It was a gas-fueled push mower. The first time, I accidentally ran over a frog. I felt terrible. I stood in the yard crying.
The mower didn't need gas to run.
( z1 need :polarity - :ARG0 ( z2 mower ) :ARG1 ( z3 gas :purpose ( z4 run :ARG1 z2 ) ) )