In this task, you're given a question, along with three passages, 1, 2, and 3. Your job is to determine which passage can be used to answer the question by searching for further information using terms from the passage. Indicate your choice as 1, 2, or 3.

Question: How many years after it was founded did Harrison graduate from Ontario Agricultural College? Passage 1:M48s were also used with mixed results during the Six-Day War of 1967. On the Sinai battlefront, Israeli M48s upgunned with the then-advanced 105 mm L7 rifled tank gun were used with considerable success against Egyptian IS-3s, T-54s/T-55s, T-34/85s and SU-100s supplied by the Soviet Union during the 1950s and the 1960s (such as during the Second Battle of Abu-Ageila. However, on the West Bank war-front, Jordanian M48s (Jordan was also a user of the M48 Patton as was Israel at the same time-period) were often defeated by Israeli 105mm-armed Centurions and WWII-era upgraded M4 Shermans (M-51s upgunned with French-built 105 mm tank guns (not to be confused with the British L7 105mm tank gun)). In purely-technical terms, the Pattons were far superior to the much-older Shermans, with shots at more than 1,000 meters simply glancing off the M48's armor. However, the 105 mm main gun of the Israeli Shermans fired a HEAT round designed to defeat the Soviet T-62 tank, which was the USSR's response to the M48's successor in US service, the M60 Patton. The Jordanian Pattons' general failure on the West Bank could also be attributed to excellent Israeli air superiority. The Israeli Army captured about 100 Jordanian M48 and M48A1 tanks and pressed them into service in their own units after the war, as the same as were the Jordanian M113 APCs they seized during the war.
 Passage 2:Originally from New Brunswick, Harrison graduated from Nova Scotia Agricultural College in 1922, and, in 1924, from the Ontario Agricultural College with a B.Sc. in agriculture. He earned an MSc in plant pathology from Macdonald Campus of McGill University a year later. A doctoral degree he started at the University of Toronto in 1929 was abandoned due to the Great Depression. He established a herbarium of mycological specimens where he was employed for many years at the Kentville Research Station (now the Atlantic Food and Horticulture Research Centre); most of his collections are now housed at the Canadian National Mycological Herbarium. His early research concerned the fungal infestation of plants, such as that of Colletotrichum lindemuthianum on beans (Phaseolus). Working with John Frederick DeWitt Hockey, they made many contributions to the control and prevention of diseases of horticultural crops. They were among the first to use the sticky slide spore trap to estimate the densities of fungal spores.
 Passage 3:On the song "The Kid Frankie", Khalifa raps over the English R&B band Loose Ends' No. 1 hit single, "Hangin' on a String" (1985). Khalifa stated that the song was inspired by the character Frankie from the film The Business (2005), who listens to Loose Ends while traveling around Spain. The song "Never Been" samples "Schala's Theme" from the soundtrack to the video game Chrono Trigger with its soundtrack composed by Yasunori Mitsuda. The song "Up", samples Tevin Campbell's "Could It Be". "In the Cut" samples "Let Go" by Frou Frou from the end credits of the film Garden State, the song "We're Done" samples the single "Our Time Is Here" by Demi Lovato from the Disney soundtrack Camp Rock. The song "Visions" contains a sample from "Huit Octobre 1971" by Cortex. "Spotlight" sampled "Theme from the Planets" by Dexter Wansel, from his album "Life on Mars" (1976) and "Still Blazin" samples Alborosie's song of the same name.
2