\q1 \v=21 \v~=\w Silver|x-occurrence="1" x-occurrences="1"\w* \w is|x-occurrence="1" x-occurrences="3"\w* \w refined|x-occurrence="1" x-occurrences="1"\w* \w in|x-occurrence="1" x-occurrences="1"\w* \w a|x-occurrence="1" x-occurrences="3"\w* \w crucible|x-occurrence="1" x-occurrences="1"\w*, \w and|x-occurrence="1" x-occurrences="2"\w* \w gold|x-occurrence="1" x-occurrences="1"\w* \w is|x-occurrence="2" x-occurrences="3"\w* \w put|x-occurrence="1" x-occurrences="1"\w* \w into|x-occurrence="1" x-occurrences="1"\w* \w a|x-occurrence="2" x-occurrences="3"\w* \w furnace|x-occurrence="1" x-occurrences="1"\w* \w to|x-occurrence="1" x-occurrences="3"\w* \w be|x-occurrence="1" x-occurrences="1"\w* \w made|x-occurrence="1" x-occurrences="1"\w* \w pure|x-occurrence="1" x-occurrences="1"\w*; \¬q1 \q2 \p~<