At: formula and left sound 1 1 1 1 2 2 1
1. concl: Formula List
2. M: Formula List
3. N: Formula List
4. q: Formula
5. r: Formula
6. a: Assignment
7. a |
< M @ (q

r.N),concl >
8. a |
< [q; r/ M @ N],concl >
a |= < [q; r/ M @ N],concl >
a |
< [q; r/ M @ N],concl >
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THEN
Trivial
Generated subgoals:None
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