Assertion: football team's title | /r/HasProperty | netherlands national league
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text: During the 1970s, Ajax played some of their finest football ever, achieving a perfect home record (46–0–0) for two full seasons (1971–72 and 1972–73), just one defeat in the whole of the 1971–72 season, and celebrating four titles in 1972 (the Netherlands national league, KNVB Cup, European Cup and Intercontinental Cup).