Generate a correct and concise answer for the question based on the words in the context.

Q: Context : Rappadikalude Gatha (English: The Journey of the Nightingales) is a 1978 Malayalam film written by Padmarajan, directed by K. G. George and starring Vidhubala in the lead role. 
Question : Who was the star of Rappadikalude Gatha?

A: Vidhubala
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Q: Context : Presidential Reunion is an American comedy Web short directed by Ron Howard and stars Saturday Night Live cast members who parodied Presidents Ford to Obama. 
Question : Which is the basis of Presidential Reunion?

A: Saturday Night Live
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Q: Context : The Zanthus train collision occurred at a crossing loop on the Trans-Australian Railway between Perth and Sydney on 18 August 1999. 
Question : What date is associated with Zanthus train collision?

A:
18 August 1999
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