162
History The " Great Conway Hall Plot " In 1931 J.B. ( Jack ) Coates wrote to the Rationalist Press Association 's ( RPA ) Literary Guide , advocating a form of scientific humanism , which he associated with Bertrand Russell , H.G. Wells and Julian Huxley : The great work of the modern period , these eminent thinkers argue , is the framing of constructive moral and social policies .
 organization: Rationalist Press Association 's ( RPA ); person: Bertrand Russell; person: H.G. Wells; person: Julian Huxley
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: Rationalist Press Association 's ( RPA ); person: Bertrand Russell; person: H.G. Wells; person: Julian Huxley