Question: Navarone Garibaldi is the half-brother of a singer who has been married how many times?

Related documents: [0]  [DOC] Navarone Anthony Garibaldi (born March 1, 1987) is an American musician. He is the frontman of the band Them Guns. Garibaldi is the son of Marco Garibaldi and Priscilla Presley, and also half-brother of Lisa Marie Presley. [END] 
[1]  [DOC] Lisa Marie Presley (born February 1, 1968) is an American singer-songwriter. She is the daughter of singer and actor Elvis Presley and actress and business magnate Priscilla Presley. Sole heir to her father's estate, she has developed a career in the music business and has issued three albums. Presley has been married four times, including to singer Michael Jackson and actor Nicolas Cage, before marrying music producer Michael Lockwood, father of her twin girls. [END]  
Answer: four
four