Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

Example Input: Context: Biologists agree that the ancestor of mitochondria was an alpha-proteobacterium. But there is no consensus as to what constitutes an alpha-proteobacterial gene. Is it a gene found in all or several alpha-proteobacteria, or in only one? Here, we examine the proportion of alpha-proteobacterial genes in alpha-proteobacterial genomes by means of sequence comparisons. We find that each alpha-proteobacterium harbours a particular collection of genes and that, depending upon the lineage examined, between 97 and 33% are alpha-proteobacterial by the nearest-neighbour criterion. Our findings bear upon attempts to reconstruct the mitochondrial ancestor and upon inferences concerning the collection of genes that the mitochondrial ancestor possessed at the time that it became an endosymbiont. 
 Question: Which species of bacteria did the mitochondria originate from?
Example Output: biologists agree that the ancestor of mitochondria was an alpha-proteobacterium.

Example Input: Context: Below are Top 10 Scholarly Stars in America in 2011. It's not always about fame and fortune for these celebs - education is a priority in their lives. Find out what scholarly stars have earned degrees and diplomas or are returning to the classroom as you head back to school. No. 10: James Franco James has attended FOUR prestigious universities in his life: UCLA, New York University, Columbia University and Yale University. We hear he's is so serious about school, he missed the Oscar nominations to attend class! No. 9: Natalie Portman Natalie Portman is so Ivy League: she graduated from Harvard University in 2003, thanks to her parents, who she says always made sure she put her studies before her acting. No. 8: Haley Joel Osment When students at NYU heard Haley Joel would be joining them as a freshman in 2006, they chalked the campus' sidewalks with his famous Sixth Sense movie line: "I see dead people." No. 7: Emma Watson Although Emma Watson put her education on hold to wrap up the Harry Potter film series, in July 2011 she announced that she was going back to school at Brown University to complete her degree. No. 6: Dakota and Elle Fanning Celeb sisters Dakota and Elle Fanning are stars on screen and in class. Dakota was her high school's homecoming queen two years in a row while Elle, who still attends middle school, somehow manages to balance her acting career with math tests and gym class. No. 5: Mara Wilson Mara Wilson graduated from NYU in 2009. Mara, who played the adorable Nattie in Mrs. Doubtfire, eventually grew up and headed to New York to attend NYU's Tisch School of the Arts; she graduated in 2009. No. 4: Tyra Banks Tyra Banks is known for being a savvy businesswoman, but even the best could use some formal training. She enrolled in Harvard Business School in 2011 and even went so far as to live in a dorm with her fellow classmates! "We live in dorms," confirmed the TV star. "I have my own room but we share a kitchen, living room and study area. It's mandatory dorms. I freaked out. In the beginning I was like, 'Oh yes, I'm going to Harvard and I'll be at the Four Seasons down the street.' And they were like, 'Girl, you're living in dorms!'" No. 3: Shakira Singer Shakira is resting her hips and giving her brain a workout at UCLA, attending classes on the history of western civilization so she could "learn from the best". No. 2: Steven Spielberg Director Steven skipped getting a formal education to be an unpaid intern at Universal Studios, where he learned his tricks of the _ . But eventually he did go back and earned his film degree in 2002. No. 1: Danica McKellar Danica McKellar is a math whiz. She used to be known for starring as Winnie Cooper in the Wonder Years, but Danica is also a UCLA graduate, math whiz and education advocate who's written three best-selling books encouraging middle-school girls to have confidence and succeed in mathematics. 
 Question: How many stars referred to in the material studied or will go to UCLA?
Example Output: three.

Example Input: Context: As of the census of 2000, there were 120,546 people, 41,668 households, and 32,292 families residing in the county. The population density was 262 people per square mile (101/km). There were 43,903 housing units at an average density of 95 per square mile (37/km). The racial makeup of the county was 68.51% Race (United States Census), 26.06% Race (United States Census) or Race (United States Census), 0.75% Race (United States Census), 1.82% Race (United States Census), 0.06% Race (United States Census), 0.72% from Race (United States Census), and 2.08% from two or more races. 2.26% of the population were Race (United States Census) or Race (United States Census) of any race. 11.6% were of german people, 10.8% irish people, 10.2% english people, 9.3% American and 5.3% italian people ancestry. 
 Question: Which ancestral group is smaller: Irish or Italian?
Example Output:
italian