Question: Song of Love starred the actress who received how many Best Actress Academy Awards?
Related documents: [0]  [DOC] Katharine Houghton Hepburn (May 12, 1907 – June 29, 2003) was an American actress. Known for her fierce independence and spirited personality, Hepburn was a leading lady in Hollywood for more than 60 years. She appeared in a range of genres, from screwball comedy to literary drama, and she received four Academy Awards—a record for any performer—for Best Actress. In 1999, Hepburn was named by the American Film Institute as the greatest female star of Classic Hollywood Cinema. [END] 
[1]  [DOC] Song of Love (1947) is a biopic starring Katharine Hepburn, Paul Henreid, Robert Walker, and Leo G. Carroll, directed by Clarence Brown and released by Metro-Goldwyn-Mayer. [END] 
Answer: 
four
four