20 August 2013 Last updated at 21:08 ET

Brazil's tourism board has asked world football governing body Fifa and hotel operators to try to bring down hotel prices – which have reportedly sky-rocketed for the World Cup period.
In some hotels featured by the Fifa-appointed agency Match, room rates will be up to five times higher during the tournament, a recent study suggests.
Brazil's Embratur fears "stratospheric" costs could damage the country's image.
The World Cup opening match will be on 12 June, in Sao Paulo.
Source: BBC News - Business http://www.bbc.co.uk/news/world-latin-america-23775475#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa

