premise: He continued . " Well , after many years I gave up the search and went back to Middle Earth thinking you might have somehow turned up there again . I was wrong , and there was something else I discovered that needed my assistance even more than your absence . An evil greater than Sauron has been plaguing Middle Earth , but he found his way here and has been working hard to return to Middle Earth , but while he is here , he is in human form . What may have been your reason for returning to Middle Earth .
hypothesis: I felt like I could find the thing I was looking for there .