\q1 \v=18 \v~=\w I|x-occurrence="1" x-occurrences="3"\w* \w will|x-occurrence="1" x-occurrences="5"\w* \w cause|x-occurrence="1" x-occurrences="1"\w* \w rivers|x-occurrence="1" x-occurrences="3"\w* \w to|x-occurrence="1" x-occurrences="1"\w* \w flow|x-occurrence="1" x-occurrences="3"\w* \w for|x-occurrence="1" x-occurrences="1"\w* \w them|x-occurrence="1" x-occurrences="2"\w* \w on|x-occurrence="1" x-occurrences="1"\w* \w the|x-occurrence="1" x-occurrences="5"\w* \w barren|x-occurrence="1" x-occurrences="1"\w* \w hills|x-occurrence="1" x-occurrences="1"\w*. \¬q1 \q2 \p~<