All m are x; &there4 No y are x'.
No y are m'.
i.e. No nightingales dislike sugar.
---------------
| | |
| ---|--- |
| | 0 | 0 | |
23. |-1-|---|---|---| -------
| | 0 | | | | | |
| ---|--- | |---|---|
| | | | | |
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