More First Order Logic!

We’re getting into quantification now.  Here’s an example:

Take this English sentence:

“Every small cube is to the left of a

And it looks like this in FOL:

∀x ((Small(x) ∧ Cube(x)) → LeftOf(x, a))

Or:

“Some small cubes to the left of a are neither blue nor yellow.”

∃x (Small(x) ∧ Cube(x) ∧ LeftOf(x, a) ∧ ¬(Blue(x) ∨ Yellow(x)))

Cool.

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