(Reuters) - China's Alibaba Group Holding Ltd reported better-than-expected second-quarter revenue on Friday, powered by strong growth in its core e-commerce business.Revenue rose to 119.02 billion yuan (£13.06 billion) for the second quarter ended Sept. 30 from 85.15 billion yuan a year earlier. Analysts were expecting revenue of 116.8 billion yuan, according to IBES data from Refinitiv.