Anchor: Guides are optional, but they are sure-footed and will take care of your camera until you reach the top.
Entailed: The guides will make sure to keep you camera safe.
Contradiction: There are no cameras allowed.
Contradiction: The old man is wearing a red tank top
Contradiction: People are on an elevator with other people
Contradiction: A couple is watching the fireworks in the dark.
Contradiction: To the east is Discovery Bay, probable site of Columbus' landing in 1494.