F(x) → ∀y(E(y, x) → b(y))] states that all the times when x is a fish, if x is eaten by something, that something is sure to be a BEAR. Simplifying this, it can be said that if anyone eats fish then that anyone has to be bear. Only bears EAT fish.Explanation:Option 1: EVERY fish is eaten by some bear∀x(F(x)⇒∃y(B(y)∧E(y, x))) which means that for all x, if x is a fish, then there is a y such that y is a bear and y eats x. That is, every fish going to be eater and that too by some bear only.Option_2: Bears eat only fish∀x(B(x)⇒∀y(E(x, y)−>F(y)) which means that for every x, if x is a bear, then for all y, if x eats y, then y is a fish. That is, if bears eat ANYTHING, that anything has to be a fish.Option 3: Every bear eats fish∀x(B(x)⇒∃y(F(y)∧E(x, y)) which states that for all x, if x is a bear, then there is a y such that, y is a fish and x eats y. That is, each and every bear eats fish and fish only.