While Nigerians are wild about watching films, Nigeria has virtually no formal cinemas with 99 percent of screenings using DVDs held in informal settings, according to UNESCO.

CNN: Nollywood loses half of film profits to piracy, say producers

This week, at this conference, economy trumps security in formal and informal settings.

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The painting - entitled Samuel Richardson, The Novelist (1689-1761), Seated Surrounded By His Second Family - is considered one of the most important "conversation piece" paintings, a type of informal portrait in which sitters would appear in domestic or private settings.

BBC: NEWS | Entertainment | Tate buys Richardson portrait