which scientist is known for exciton-polaritons and has yasuharu suematsu as his academic advisor ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_knownFor dbr_Exciton-polaritons sep_dot var_uri dbo_academicAdvisor dbr_Yasuharu_Suematsu sep_dot var_uri a dbo_Scientist brack_close