Anchor: Health Effects of Acid Aerosols On North American Children-Respiratory Symptoms.
Entailed: Acid Aerosols have certain health effects on some children
Contradiction: No negative side effects have been discovered by use of acid aerosols
Contradiction: I wasn't  hiding anything. 
Contradiction: The people are playing a game of soccer on their neighborhood street.
Contradiction: Emergency personnel are eating.
Contradiction: Two dogs are playing in the pool.