Definition: In this task, you're given a context passage, followed by a question that needs to be answered. Based on the paragraph, you must write unambiguous answers to the questions and your answer must refer to a specific phrase from the paragraph. If multiple answers seem to exist, write the answer that is the most plausible.

Positive Example 1 -
Input: Tracy slept awkwardly on their new bed and was having some pain, so Tracy cracked her neck. 
Question: What did Tracy do with her neck?
Output: crack her neck

Positive Example 2 -
Input: The story of the rise of politician Willie Stark from a rural county seat to the governor's mansion is depicted in the film. He goes into politics, railing against the corruptly run county government, but loses his race for county treasurer, in the face of unfair obstacles placed by the local machine. Stark teaches himself law, and as a lawyer, continues to fight the local establishment, championing the local people and gaining popularity. He eventually rises to become a candidate for governor, narrowly losing his first race, then winning on his second attempt. Along the way he loses his innocence and becomes as corrupt as the politicians he once fought against. When his son becomes paralyzed following a drunk driving accident that kills a female passenger, Stark's world starts to unravel and he discovers that not everyone can be bought off. The story has a complex series of relationships. All is seen through the eyes of the journalist, Jack Burden, who admires Stark and even when disillusioned still sticks by him. Stark's campaign assistant, Sadie is clearly in love with Stark and wants him to leave his wife, Lucy. Meanwhile, Stark philanders and gets involved with many women, taking Jack's own girlfriend, Anne Stanton, as his mistress. When Stark's reputation is brought into disrepute by Judge Stanton (Anne's uncle), he seeks to blacken the judge's name. When Jack finds evidence of the judge's possible wrongdoing, a quarter century earlier, he hides it from Stark. Anne gives the evidence to Stark, who uses it against her uncle, who immediately commits suicide. Anne seems to forgive Stark, but her brother, the surgeon who helped save Stark's son's life after the car crash, cannot. The doctor eventually assassinates Stark after Stark wins an impeachment investigation. The doctor in turn is shot down by Sugar Boy, Stark's fawning assistant. The main plot is a thinly disguised version of the rise of real-life 1930s Louisiana Governor, Huey Long, Long's efforts to blacken the name of Judge Benjamin Pavy, and Long's assassination by the Judge's son-in-law (compared to nephew, as in the film), Dr. Carl Weiss. 
Question: What happened to Willie Stark's son?
Output: He was paralyzed in a drunk driving accident.

Negative Example 1 -
Input: tracy wanted to feel safe so she decided to walk behind addison. 
Question: What will happen to Tracy?
Output: appreciate addison

Negative Example 2 -
Input: Tracy told Ash they needed glasses then they accompanied them to the optician for their appointment. 
Question: What does Tracy need to do before this?
Output: know Ash well

Now complete the following example -
Input: In a positive review of the song, Robert Copsey of Digital Spy gave it four out of five stars and praised Rihanna's direction towards a "softer and more prolific edge". Brittany Lewis of GlobalGrind called "Diamonds" a catchy song and felt that it had the potential to be another hit for Rihanna. Glenn Gamboa of Newsday said that, although it does not sound like an emphatic hit, the lyrical content of the song depicts a "personal shift" for Rihanna. According to James Montgomery of MTV News, "Diamonds" is more positive than previous singles such as "We Found Love" and "Where Have You Been", despite its moderate tempo. Lindsey DiMattina of Hollywood.com said that Rihanna's singing is stronger than ever. Contactmusic's reviewer described it as a "laid-back track", and suggested that the lyrical content is related to her former boyfriend Chris Brown. In a track-by-track review of Unapologetic, Andrew Hampp of Billboard found the song inspiring and commented that it "finds Rihanna doing one of her throatiest, most impassioned vocals to date". Andy Kellman of Allmusic cited the song as one of the highlights on Unapologetic, and gave it three and a half stars.In a less enthusiastic critique, Jon Caramanica of The New York Times likened "Diamonds" to a James Bond movie theme song, but with "insipid lyrics". Jim Farber of the New York Daily News felt that the song is not as evocative as it attempts to be and lacks the sense of mystery and engaging production found on "We Found Love". Kevin Blair of the Irish Independent's, Independent Woman, was critical of the song for deviating from Rihanna's previous dance and R&B songs and dismissed it as a "chugging, faintly misty-eyed, middle of the road pop song". Chris Richards of The Washington Post panned the song as a "power ballad without much power". 
Question: What is the name of the person whose former boyfriend is suggested by Contactmusic's reviewer to be related to the lyrical content of Diamonds?
Output: 


Output: Rihanna