BOOK 4 IS UP. BOOK 4 IS UP. BOOK 4 IS UP. BOOK 4 IS UP.

FIG. 1: BOOK 4, UP.

BOOK 4 IS UP. BOOK 4. IS UP. BOOK 4 IS UP.

Q: BOOK 4 IS?
A: UP.

Q: BOOK 4?
A: IS UP.

Q: BOOK 4 IS NOT?
A: NOT UP.

BOOK	STATUS
4	UP
4	STILL UP
5	DOES NOT EXIST
4	EXISTS; UP

BOOK 4 IS UP.