Anchor: We report ozone concentrations as a cumulative index called the SUM06.
Entailed: Ozone concentrations are reported as an index called the SUM06.
Contradiction: Ozone concentrations are not reported as an index called the SUM06.
Contradiction: It is defined by physical amounts, not monetary ones. 
Contradiction: A person is in the water on a surfboard.
Contradiction: The girls is walking.
Contradiction: There is a person performing an activity.