18:45Arthur C Clarke StoriesThe Nine Billion Names of GodEpisode 5: The SentinelBBC Radio 4 Extra Duration: 15 minutes Sun 1st May 2011, 18:45 on BBC Radio 4 ExtraThe story from which Arthur C Clarke developed the film '2001: A Space Odyssey' with Stanley Kubrick. Read by John Shrapnel.GenresDramaSciFi & FantasyBrandArthur C Clarke StoriesSeriesArthur C Clarke Stories: The Nine Billion Names of God Source: BBC Online