BEIJING, Feb 9 (Reuters) - China has executed a Uighur activist in a far-northwestern city for attempting to "split the motherland" and possessing explosives, drawing condemnation from a human rights group which said the evidence was insufficient. Ismail Semed, who was deported to China from Pakistan in 2003, had told the court a confession had been coerced, but he was executed nevertheless on Thursday in Urumqi, capital of the predominantly Muslim region of Xinjiang, Radio Free Asia on Friday quoted his widow, Buhejer, as saying. "When the body was transferred to us at the cemetery I saw only one bullet...