In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it. Your job is to determine which sentence(s) from the passage can be used to search for further information needed to answer the question.

Question: How many books has the author of the children's book that inspired the character of Princess Fiona written? Passage:Created by screenwriters Ted Elliott and Terry Rossio, Fiona is loosely based on the unsightly princess in William Steig's children's book Shrek!, from which her role and appearance were significantly modified. The screenwriters adapted the character into a princess under a shapeshifting enchantment, an idea that was initially greatly contested by other filmmakers. Fiona is voiced by actress Cameron Diaz. Comedian and actress Janeane Garofalo was originally cast as the character until she was fired from the first film with little explanation, although it is believed that the producers found Garofalo's sarcastic approach to the princess unsuitable after Shrek's original voice actor died. Fiona was one of the first human characters to have a lead role in a computer-animated film, thus the animators aspired to make her both beautiful and realistic in appearance. However, an early test screening resulted in children reacting negatively towards the character's uncanny realism, prompting the animators to re-design Fiona into a more stylized, cartoonish heroine.

Created by screenwriters Ted Elliott and Terry Rossio, Fiona is loosely based on the unsightly princess in William Steig's children's book Shrek!, from which her role and appearance were significantly modified

Question: Which of the players that Serena Williams played in the 1997 qualifying rounds is the oldest? Passage:Williams played the qualifying rounds of her first three tournaments of 1997, in the first round of State Farm Evert Cup, third round of Acura Classic and second round of European Indoor Championships, to Alexia Dechaume-Balleret, Magui Serna and Dominique Monami respectively. She then qualified for her first tour main draw when she defeated Magui Serna in the final round of qualifying at the Kremlin Cup, but lost in the first round of the main draw to compatriot Kimberly Po. She then entered the Ameritech Cup as a wild card and ranked no. 304. She earned her first main draw win against then world no. 27 Elena Likhovtseva in straight sets. In the next round, she upset world no. 7 Mary Pierce in two tight sets, with Williams failing to serve it out in the twelfth game of the second set but eventually won in a tie-break. In the quarterfinal she upset world no. 4 Monica Seles easing through the second and third sets, recording her first career wins over top 10 players and becoming the lowest-ranked player in the open era to defeat two top 10 opponents in one tournament. She ultimately lost in the semifinals to world no. 5 Lindsay Davenport 4-6 in both sets.

Williams played the qualifying rounds of her first three tournaments of 1997, in the first round of State Farm Evert Cup, third round of Acura Classic and second round of European Indoor Championships, to Alexia Dechaume-Balleret, Magui Serna and Dominique Monami respectively

Question: How long had David Stern been Commissioner of the NBA for the year Fryer retired from his position as referee? Passage:After retiring as a player, Fryer embarked upon a lengthy career as an NBA referee, beginning in 1978. As of the beginning of the 200607 NBA season, he officiated 1,649 regular season, 145 playoff, and 11 NBA Finals games as well as the 1998 All-Star Game. He was also one of three former NBA players (Leon Wood and Haywoode Workman) who officiated in the league. During a 2002 playoff game between the Charlotte Hornets and Orlando Magic, Fryer and his officiating crew disallowed a field goal made by the Hornets Baron Davis. Davis received an inbound pass with 0.7 seconds remaining and successfully made the shot before the buzzer sounded. This incident led Commissioner David Stern to consider the use of instant replay in NBA games. Considered one of the top-rated referees in the league, he retired in 2007 following Game 3 of the 2007 NBA Finals having officiated 1,806 NBA games. It was reported that Fryer was dissatisfied over the current state of management of officials.
Considered one of the top-rated referees in the league, he retired in 2007 following Game 3 of the 2007 NBA Finals having officiated 1,806 NBA games