In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].

Let me give you an example: For four years we have waited expectantly for the pitter patter of tiny paws. Soon, that wait could finally be over. Tian Tian, the UK's only female giant panda, has conceived and could give birth to a cub as early as August. However Edinburgh Zoo, where the pandas live, have warned people 'not to get too excited' as the process is 'extremely complex'. Moreover, on the two previous occasions keepers inseminated Tian Tian - whose name means 'Sweetie' - she has failed to produce a panda cub. She was artificially inseminated again in March this year, but keepers at the zoo say implantation - when a fertilised egg attaches to the uterus - has not yet occurred.Tian Tian has conceived and could give birth to a cub as early as AugustShe has been inseminated twice before but so far failed to produce a cubTian Tian and Yang Guang arrived in 2011 from China to great fanfareOn loan at £600k a year, became first giant pandas to live in UK for 17 years 
 Questions:Under the terms of the agreement any cubs will return to _ at the age of two, the age at which they would normally leave their mother in the wild.
The answer to this example can be: China
Here is why: This is a good example. Based on the passage, any cubs will return to China at the age of two

OK. solve this:
It's the most widely used illegal drug in the world, but does cannabis deserve its reputation as being one of the safest? Not if you take a look at South Africa, one of the UK's biggest providers of high-strength cannabis, where a potent strain of the plant dubbed 'swazi gold' is wrecking havoc on its young population. As revealed in BBC's Stacey Dooley Investigates, which aired last night, poverty-stricken grandmothers are growing it, drug mules are risking their lives to smuggle it out of the country, and what stays behind is ruining the lives of South Africa's drug-addled teens. Scroll down for videoThe strain is grown in Swaziland, one of South Africa's poorest statesIt has extremely high concentrations of THCSouth African teens blend it with heroin to produce potent cocktail 
 Question:Lucrative: Farmers in _ developed the potent strain through cross-pollination, and can now yield double the crop they once could annually (file photo).
Answer:
Swaziland