Question: Which of the founder of Basque artistic group was a Spanish Basque sculptor?
Sentence (from "Euskal Herriko Alderdi Sozialista"): Euskal Herriko Alderdi Sozialista (English: Socialist Party of the Basque Country ; EHAS) was an illegal revolutionary socialist Basque political party, with presence in both Spanish Basque Country and the French Basque Country.
Relevant evidence: No