"Foundation Trilogy" author (6)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">foundation trilogy author</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for asimov that I've seen before include "He wrote about robots" , "See 22 Down" , "Isaac --, science fiction author" , "Isaac ---, SF author" , "novelist" .)