which scientist is known for the coppersmith–winograd algorithm and the coppersmith–winograd algorithm ?
select distinct var_uri where brack_open var_uri dbo_knownFor dbr_Coppersmith–Winograd_algorithm sep_dot var_uri rdf_type dbo_Scientist sep_dot var_uri dbo_knownFor dbr_Coppersmith–Winograd_algorithm sep_dot brack_close