which scientist is known for reissner–nordström metric and has walther nernst as his academic advisor ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_knownFor dbr_Reissner–Nordström_metric sep_dot var_uri dbo_academicAdvisor dbr_Walther_Nernst sep_dot var_uri a dbo_Scientist brack_close