\q1 \v=7 \v~=\w I|x-occurrence="1" x-occurrences="1"\w* \w have|x-occurrence="1" x-occurrences="1"\w* \w seen|x-occurrence="1" x-occurrences="1"\w* \w slaves|x-occurrence="1" x-occurrences="2"\w* \w on|x-occurrence="1" x-occurrences="2"\w* \w horses|x-occurrence="1" x-occurrences="1"\w*, \¬q1 \q2 \p~<