Text: The New York City Consumer Affairs Commissioner is quoted as saying Mr. Fishbein has a shot at winning the suit because restaurants are allowed to add a service charge for parties larger than six if the customer is told in advance--but the surcharge is limited to 15 percent.
Entailment: Restaurants can add an automatic 15% surcharge for large parties
Contradiction: If there are less than six at a table, restaurants are allowed to add a 15% surcharge to the bill.