This task involves creating questions from a given passage that involve some kind of complex reasoning (including numerical reasoning).
The generated questions must require looking at more than one part of the passage to answer. Try to use a variety of reasoning types in your questions (some of the sample reasoning types are illustrated in the 'positive examples' field) and also have a variety of answer types (spans, numbers, dates). A span is a continuous phrase taken directly from the passage or question. In such questions, the answer spans are recommended to be five words. Questions with answer type "number", are expected to start with "How many". For instance, "How long did an event last?" can be phrased as "How many years did an event last?". To increase diversity, try to create more questions for which the answer will be multiple spans. Please create questions that require AT LEAST 2 arithmetic operations as illustrated in the 'positive examples' field. You are encouraged to try DIFFERENT COMBINATIONS of operations and not just limit to the combinations shown in those examples. The more challenging questions you create, the better it is.

Passage: In 1963, hundreds of thousands of people stood ashore by the Nieuwe Maas and the Nieuwe Waterweg to wave two ships, deGroote Beer and the Waterman goodbye. The ships transported thousands of Feijenoord fans to Lisbon where the club faced S.L. Benfica on 8 May 1963 in the European Cup semi-finals. The first leg, held in Rotterdam a month earlier, finished 00. Despite Feijenoord eventually losing the match 31, this turned out to be the start of the most successful period in the clubs history. Feijenoord won the double for the first time in their history in 1965, and managed to win another double a few years later in 1969. The 1965 title secured Feijenoord a spot in the 196566 European Cup, where they faced multiple cup champion Real Madrid C.F. on 8 September 1965. During the match, Hans Kraay had to leave the pitch injured after 31 minutes, without being substituted. He returned at the start of the second half and scored the goal which resulted in a 21 win. During the match, fans favourite Coen Moulijn was attacked by a Spanish defender. Moulijn then proceeded to chase the defender down the pitch, leading other players, and even fans who entered the pitch, to do the same. The referee could do nothing but to suspend the match at 21 in Feijenoords favour. Two weeks later, Real Madrid comfortably beat Feijenoord 50 and eventually won the European Cup that season.
How many doubles did Feijenoord win in the 1960s?