Anchor: Risk Factors and Costs Associated with an Asthma Attack.
Entailed: There are risk factors and costs associated with asthma attacks
Contradiction: Asthma attacks have no risks 
Contradiction: He is inside playing video games.
Contradiction: people are on a boat
Contradiction:  I try to rent it but it was on available. 
Contradiction: The mosque was built in the 19th' century.