Chunk Feeney is an Irish American billionaire who made his fortune when he set up the world's largest duty-free goods company.这个句子中who引导的定语从句的先行词是？
Chunk Feeney isan Irish American billionaire who made his fortune when he set up the world'slargest duty-free goods company.
who引导的定语从句的先行词是billionaire。作表语的名词后接定语从句时，应就近修饰，不可能隔着其他成分去修饰主语。