Question: Which of the 31 Mexican states is home to the mountain frog Ptychohyla zophodes?
Sentence (from "Oaxaca"): Oaxaca ( , ] , from Nahuatl: "Huāxyacac" , ] ), officially the Free and Sovereign State of Oaxaca (Spanish: "Estado Libre y Soberano de Oaxaca" ), is one of the 31 states which, along with the Federal District, make up the 32 federative entities of Mexico.
Relevant evidence: Yes