who created the altar frontal from la seu d'urgell or of the apostles and also the bull-leaping fresco ?
SELECT DISTINCT var_uri where brack_open dbr_Altar_frontal_from_La_Seu_d'Urgell_or_of_The_Apostles dbp_artist var_uri sep_dot dbr_Bull-Leaping_Fresco dbp_artist var_uri brack_close