Grandfather Frog scratched his head thoughtfully and looked a long time at the dam of logs and sticks and mud .<br>Then his big mouth widened in a big smile .<br>`` Why , that is very simple , '' said he , `` Jerry Muskrat will make a big hole through the dam near the bottom , because he knows how , and the rest of us will keep watch to see that no harm comes near . ''
A hole needed to be made in the dam, but not at the top or the middle.
the whole was to made near the bottom so the statement is correct but the extra words made the AI think unknown information was added.
( z1 contrast :ARG1 ( z2 need :ARG1 ( z3 hole :location ( z4 dam ) ) ) :ARG2 ( z5 need :polarity - :ARG1 ( z6 hole :location ( z7 or :op ( z8 top ) :op ( z9 middle ) ) ) ) )