Anchor: People taking pictures in a building.
Entailed: A group of people are taking pictures inside.
Contradiction: Tourists are outside taking photos of a famous landmark.
Contradiction: There was a cameraman taking photos of nature
Contradiction: Some rely on collected info, others on firsthand observation 
Contradiction: Tokugawa rule was based in Osaka and only lasted for 25 years.
Contradiction: Visibility is measured in deciviews.