Input (grade 12): Coba (CobÃ in the Spanish language) is a large ruined city of the Pre-Columbian Maya civilization, located in the state of Quintana Roo, Mexico.
Output (grade 6): Coba (CobÃ in the Spanish language) is a big ruined city of the Pre-Columbian Maya civilization. It can be found in the state of Quintana Roo, Mexico.