Beyond Bentleys and chains... Chicago rapper Lupe Fiasco is a curious kind of hip-hop star, writes Andrew Murfett. HOW did you start 2010? To say that the first month of this year was eventful for Chicago rapper Lupe Fiasco would be a colossal understatement. Having leaked his excellent mixtape Enemy of the State: a Love Story at the end of last year, his first in four years, in January the 28-year-old Sunni Muslim joined a group of personalities (including actress Jessica Biel) to climb Mount Kilimanjaro to raise awareness of the world's lack of drinking water. He climbed all 5895 metres, he declares proudly. ''It actually changed my life,'' he says. ''It was the hardest thing I've ever done. At a certain point, the altitude medicine doesn't work. It becomes more about your body. And then a spiritual and mental thing.'' Lupe (Loop-ay) - real name Wasalu Muhammad Jaco - is difficult to pin down but, when finally on the phone, he proves articu