Bx: x is blond
a: Alice
Cx: x cooks
b: Bobby
Dx: x dusts
c: Cindy
Mx: x is a maid
Sxy: x is the sister of y
1. Cindy, who is Bobby's sister, is blond.
2. Each of Bobby's sisters is blond.
3. Bobby is not blond, but all of his sisters are.
4. Alice cooks, but neither Bobby nor Cindy does.
5. Alice, who is a maid, cooks but does not dust.
6. Maids who cook also dust.
7. Some maids who cook also dust.
8. Not all maids who cook also dust.
9. Some maids who cook do not dust.
10. All maids dust, but not all of them cook.
11. Only maids dust.
12. Unless a maid dusts, she does not cook.
13. None of Bobby's sisters are maids.
14. Some of Bobby's sisters cook, but none of them dust.