which ship builder built the <brp alfredo peckson ?
SELECT DISTINCT var_uri where brack_open dbr_BRP_Alfredo_Peckson_ attr_open PG-372 attr_close dbp_shipBuilder var_uri sep_dot dbr_BRP_Alfredo_Peckson_ attr_open PG-372 attr_close dbp_shipBuilder var_uri brack_close