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: Nurse Laura Mattson and World War I military pilot Lt. Geoffrey Aiken fall in love after only knowing each other for a few days. Tragically, he is brought to her hospital and, by chance, put under her care after being fatally wounded on his very first mission. After he dies, Laura realizes she is pregnant. Edward Seward loves her and persuades her to marry him. As far as anyone knows, the child will be his. By 1940, Laura's son Bob has grown into a young man, newly engaged to Peggy Chase. Laura has raised Bob to embrace pacifism. Meanwhile, Edward Seward, now United States Secretary of State, flies home after having negotiated the Seward Peace Treaty, which he claims will make it impossible for any country to go to war again. However, when the U.S. ambassador to the state of "Eurasia" is assassinated while en route to the Eurasian State Department to discuss an earlier diplomatic incident, the President sends the navy across the Atlantic to underscore the U.S. demand for a formal apology. Eurasia refuses to comply, and another world war becomes inevitable despite the treaty. Laura speaks at a large peace rally, over her husband's strong objection. The rally is broken up a group of angry men. A mob then gathers at the Seward home and starts pelting the place. Edward manages to disperse the crowd by first reminding the mob of each American's right to voice his or her own opinion in peacetime, and pledging himself wholeheartedly to the struggle once war is declared. When a news reporter interviews him, he insists his son will enlist. Bob categorically denies this, causing Peggy to break off their engagement. Unable to get his son to change his mind, Edward tells him that he at least has no right to sully the Seward name, revealing that he is not Bob's father. Laura confirms it, and tells Bob of his real father and how he died. 
Question: Who is Bob's father?
Output: 


Output: Geoffrey Aiken