who is the founder of the trade union which affiliates british association of colliery management – technical ?
SELECT DISTINCT var_uri where brack_open dbr_British_Association_of_Colliery_Management_–_Technical,_Energy_and_Administrative_Management dbo_affiliation var_x sep_dot var_x dbp_founded var_uri sep_dot var_x a dbo_TradeUnion brack_close