Forensic Architecture, Naeem Mohaiemen up for Turner art prize

Luke Willis Thompson and Charlotte Prodger are also nominated for art world’s biggest, most controversial competition

It is the biggest and most controversial competition in the art world – often challenging what can be defined as art.

This year, the Turner Prize is all about the creator rather than the creation and features only film, no other form of art.

The four nominees all work in film and include an anthropologist and an activist group.

Al Jazeera’s Charlie Angela reports from London..