Logic Riddles

Question: Using 3 periods (.) and 1 question mark (?) make this a logical and grammatically correct sentence:

"That that is is that that is not is not is that it it is"

Question: In Michigan you cannot take a picture of a man in a green hat.

Why?

Question: A man drops an egg onto the cement. The egg doesn't break after falling 3 feet.

How could this be?

Question: A baseball pitcher plays during 9 innings, gets 27 strike outs, and only throws 81 pitches. But they still lose 1-0 to the other team.

How is this possible?

Question: How many letters are in the answer to this riddle?