Anchor: Within a few days, i-Sportsbook refunds my credit card deposit, as promised, and a week later I get a check for my winnings.
Entailed: i-Sportsbook promised to refund my credit card deposit, and they followed through on their promise. 
Contradiction: i-Sportsbook never sent me a check for my winnings, nor did they ever refund my credit card deposit as promised. 
Contradiction: The race has already ended.
Contradiction: A person reads in a subway station.
Contradiction: Postal Service rates are measured on a scale of one to ten.
Contradiction: A boy is practicing in the park.