Problem: *Cotto eatType coffee shop; Cotto food Indian; Cotto priceRange less than 20; Cotto customer rating low; Cotto area riverside; Cotto near The Portland Arms*
A: A low rated cheap Indian coffee shop in Riverside near The Portland Arms is called Cotto.
Problem: *A Wizard of Mars PRECEDED_BY Wizards at War*
A: A Wizard of Mars was preceded by Wizards at War.
Problem: *The Eagle eatType coffee shop; The Eagle food Indian; The Eagle priceRange cheap; The Eagle customer rating average; The Eagle area riverside; The Eagle near Burger King*
A: The Eagle is a coffee shop providing Indian food in the cheap price range. It is located in the riverside. It is near Burger King. Its customer rating is average.
Problem: * MATERIAL Vacuum; List of refractive indices; Vacuum N 1 (by definition)*
A:
The refractive index of vacuum is 1 by definition.