About: http://webisa.webdatacommons.org/122854548

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Spanish, the Indians speak indigenous languages, mostly Nahuatl, and only 79% of them speak also Spanish.So Mexican is certainly not an ethnicity, but nationality (in your terminology).
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com