instruction:
This task involves annotating the answer type to a given question that involve some kind of complex reasoning (including numerical reasoning). Note that the questions require looking at more than one part of the passage to answer. There are 3 possible answer types (i) spans, (ii) numbers and (iii) dates. If the answer can be found in the passage, label it as "span". If the answer is a number, label as "number". Similarly, label "date" if you think the answer to the given question is a date.
question:
Passage: The University of Sussex is a research-intensive university and was ranked 62nd in Europe and 147th in the world by The Times Higher Education World University Rankings 2018. The university was ranked 228th in the world according to the QS World University Rankings 2018 (the first time it ever ranks outside of the QS top 200); it placed 187th in 2017. The university placed in the top 1 percent in the world in the 2017 CWUR ranking, coming at number 117 in the world for quality of education. Sussex ranked as 66th in the world in 2016 for its sustainability on the UI GreenMetric ranking.  It was ranked 39th in the world in the 2018 installment of The Times Higher Education World University Rankings for the social sciences, 11th in Europe and seventh in the United Kingdom. It ranked as 49th in the world for Law and 48th for Business and Economics. The university also ranked in the top 100 in the world for the social sciences in the CWTS Leiden Ranking 2016 and in the top 150 in the world for Social Sciences ARWU 2016 and 90th best in the world for Psychological Sciences in the U.S. News & World Report.
Question: Which three organizations ranked the University of Sussex on its contribution to Social Sciences?
answer:
span


question:
Passage: After winning over the Browns, the Steelers traveled further west to take on the Colts in a rematch of 2015's 45-10 blowout win. The Steelers struck first in the first quarter when Le'Veon Bell ran for a 5-yard touchdown to take a 7-0 lead. This would be followed by Ben Roethlisberger finding Antonio Brown on a 25-yard touchdown pass later on in the quarter to make it 14-0. The Colts got on the board in the second quarter when QB Scott Tolzien, starting in place of the injured Andrew Luck, found Donte Moncrief on a 5-yard touchdown pass to make it 14-7. However, the Steelers pulled away as Roethlisberger found Brown again this time on a 33-yard touchdown pass for a 21-7 lead at halftime. After a scoreless third quarter, the Steelers sealed the game with the only points in the second half when Roethlisberger found Brown again this time on a 22-yard touchdown pass and the eventual final score of 28-7. With the win, the Steelers improved to 6-5. Roethlisberger's record as a starter improved to 1-1 on Thanksgiving Day.
Question: How many touchdown passes did Roethlisberger throw in total?
answer:
number


question:
Passage: Ashkelon was formally granted to Israel in the 1949 Armistice Agreements. Re-population of the recently vacated Arab dwellings by Jews had been official policy since at least December 1948, but the process began slowly.  The Israeli national plan of June 1949 designated al-Majdal as the site for a regional Urban area of 20,000 people. From July 1949, new immigrants and demobilization soldiers moved to the new town, increasing the Jewish population to 2,500 within six months. These early immigrants were mostly from Yemen, North Africa, and Europe. During 1949, the town was renamed Migdal Gaza, and then Migdal Gad. Soon afterwards it became Migdal Ashkelon. The city began to expand as the population grew. In 1951, the neighborhood of Afridar was established for Jewish immigrants from South Africa, and in 1953 it was incorporated into the city. The current name Ashkelon was adopted and the town was granted Local council (Israel) status in 1953. In 1955, Ashkelon had more than 16,000 residents. By 1961, Ashkelon ranked 18th among Israeli urban centers with a population of 24,000. This grew to 43,000 in 1972 and 53,000 in 1983. In 2005, the population was more than 106,000.
Question: Which year had the highest population in Ashkelon, 1972 or 1983?
answer:

date