who is the common parent of british association of oral and maxillofacial surgeons and royal college of ophthalmologists ?
SELECT DISTINCT var_uri where brack_open dbr_British_Association_of_Oral_and_Maxillofacial_Surgeons dbo_parentOrganisation var_uri sep_dot dbr_Royal_College_of_Ophthalmologists dbp_parent var_uri brack_close