考研真题英语阅读中的一句话其中的某个结构不太明白WithregardtoFuturistpoetry,however,thecaseisratherdifficult,forwhateverFuturistpoetrymaybe—evenadmittingthatthetheoryonwhichitisbasedmayberight—itca

　　考研真题英语阅读中的一句话其中的某个结构不太明白

　　WithregardtoFuturistpoetry,however,thecaseisratherdifficult,forwhateverFuturistpoetrymaybe—evenadmittingthatthetheoryonwhichitisbasedmayberight—itcanhardlybeclassedasLiterature这里的thetheoryonwhichitisbased这里的不太明白,it是代指什么吗?不知道怎么理解这个结构,是定语从句?还是itisbasedontheory变的?也不懂这个怎么翻译,