In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.

Passage: Relations between the people of Afghanistan and India traces to the Indus Valley Civilisation. Following Alexander the Great's brief occupation, the successor state of the Seleucid Empire controlled the region known today as Afghanistan. In 305 BCE, they ceded much of it to the Indian Maurya Empire as part of an alliance treaty. The Mauryans brought Buddhism from India and controlled the area south of the Hindu Kush. Their decline began 60 years after Ashoka's rule ended, leading to the Hellenistic reconquest of the region by the Greco-Bactrians. Much of it soon broke away from the Greco-Bactrians and became part of the Indo-Greek Kingdom. The Indo-Greeks had been defeated and expelled by the Indo-Scythians in the late 2nd century BCE. Much of Afghanistan has been influenced by Buddhist, Hindu and Zoroastrian cultures until the arrival of Islam in the 7th century. But despite many Afghans converting to Islam, the Muslims and Hindus lived side by side.
 Link Information: According to the Sri Lankan texts Mahavamsa and the Dipavamsa, Ashoka ascended the throne 218 years after the death of Gautama Buddha, and ruled for 37 years. Question: How many years did the Ashoka's rule?
Answer: 37

Passage: Ten laps into the race, Michael Waltrip passed pole-sitter Jeff Gordon for the lead. On Lap 19, the caution flag was thrown after a multi-car accident. Waltrip continued leading until Lap 55, in which Dale Earnhardt Incorporated teammate Dale Earnhardt, Jr. After Bobby Hamilton, Jr. had an accident on Lap 70, Earnhardt led the race into pit road, but was pushed out by Gordon and Brian Vickers, and fell to fifteenth, giving Mike Wallace the lead entering Lap 74. Shepherd pitted on the following lap, and Morgan Shepherd took the lead. However, Shepherd would later pit, as Gordon regained the lead. Waltrip then retook the lead from Gordon on Lap 86, though Gordon then took the lead again 13 laps later. Ten laps later, Gordon pitted, and Waltrip was given the lead. On the ensuing lap, Earnhardt took the lead, though he later pitted, and Jimmy Spencer gained the lead. On Lap 113, Spencer lost the lead to Gordon when he pitted, who led the pit stops on Lap 139. Dave Blaney stayed out, and took the lead, though Ryan Newman gained first-place when Blaney went to pit road. Newman pitted on Lap 143, giving Tony Stewart the lead. With ten laps left in the race, Hendrick Motorsports teammates Jeff Gordon and Jimmie Johnson followed in third and fourth, respectively, behind Tony Stewart and Dale Earnhardt, Jr. Johnson then pushed Gordon past Stewart and Earnhardt, and Gordon subsequently won, his fourth of the season and second consecutive. The victory by Gordon made him the first driver since Cale Yarborough to win the Pepsi 400 from the pole. A version of the race's waning moments was included in the prologue of the video game , which involved Johnson pushing Gordon past Earnhardt.
 Link Information: Yarborough has been married to Betty Jo Thigpen since 1961 and they have three daughters Question: How many children did the man have who was was the last driver before Gordon to win the Pepsi 400 from the pole?
Answer: three 

Passage: Kracaw graduated from high school in 1915. In the same year, her family left Colorado and moved to Orland, California, since the lower elevation there was expected to benefit her father's health. However, her father suffered setbacks in his business, and facing both blindness and tuberculosis, he committed suicide in 1917. Kracaw enrolled at the University of California, Berkeley, in 1915. She considered majoring in economics and English literature before deciding on psychology. She made a number of lifelong friends during her undergraduate years, including Jean Macfarlane, whose interest in psychology drove Kracaw to select that discipline for her major. She graduated cum laude in 1921, and began graduate study at UC Berkeley. Her Master's thesis studied ten families in San Francisco that had been clients of a juvenile court. She volunteered as a probation officer, and was required to meet and report on the families she was studying. She would later write that she struggled to be objective in writing about these families. Kracaw received her Master's degree in clinical psychology in 1920.
 Link Information: 

San Francisco (, , ; ), officially City and County of San Francisco and colloquially known as SF, San Fran, or "The City", is the cultural, commercial, and financial center of Northern California. San Francisco is the 13th-most populous city in the United States, and the fourth-most populous in California, Question: In which state did Kracaw conduct research for her Master's thesis?

Answer: California