The 23-year-old was left as the ovewhelming favourite for the race after team mate Tirunesh Dibaba decided to skip the 5,000 metres because of illness following her 10,000 metres triumph.
Ethiopia's Meseret Defar smashed her own 5,000 metres world record by nearly eight seconds and Jamaica's Asafa Powell cruised to a sub-10-second victory in the men's 100 at a Golden League meeting on Friday.
Jamaica's Usain Bolt and Ethiopian distance runner Almaz Ayana were crowned as the IAAF's athletes of the year on Friday.
Ethiopia's Kenenisa Bekele won the battle of the distance greats when he held off a late surge from World and Olympic 10,000 and 5,000 metres champion Mo Farah to win the Great North Run half marathon on Sunday.
Olympic and world champion Usain Bolt outsprinted fellow Jamaican Nickel Ashmeade and American Justin Gatlin to win the 100 metres at the Zurich Diamond League meeting on Thursday.