Anchor: A much larger number of structures put up 800 or more years ago did not survive.
Entailed: Structures that are 800-year old or older did not survive.
Contradiction: Structures that are 800-year old or older are still standing strong to this day.
Contradiction: The man is standing in the bus.
Contradiction: One avenue getting more notice is user behavior.
Contradiction: The largest cave is called the Fortress due to its rocky exterior look.
Contradiction: A woman moves a baby stroller