At: formula imp left sat 1 1 1 3 1 2
1. concl: Formula List
2. M: Formula List
3. N: Formula List
4. q: Formula
5. r: Formula
6. a: Assignment
7.
F
concl.a |= F
8. a |= q
F
M.a |
F
a |
q


r
F
N.a |
F
F
concl.a |= F
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Trivial
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