3. Vxy Sibling(x,y) e> Sibling(y,x) a. True b. False In "Siblings(John, Sally)", sibling represents: a. Constant b. Variable c. Predicate d. Equality 4. 5. In "Vx At(x,MU)>Smart(x)", MU represents: a. Predicate b. Variable c. Quantifier d. Individual In "3x Vy Loves(x,y)", x and y represent: a. Constant b. Predicate 6. c. Equality d. Variables The sentence ". a. No one like ice-cream b. Someone likes ice-cream c. Everyone likes ice-cream d. All of the above In "Ym,c (Mother(c) = m) 7. ?Likes(x,IceCream)" means: 8. (Female(m) ? Parent(m,c))", m represents. a. b. c. d. Father of c Brother of c Parents of c Mother of c