an Entity references as follows:
Led Zeppelin's 1971 European Tour was a concert tour of Europe by the English rock band. The tour commenced on 3 May and concluded on 5 July 1971. It included one concert at Liverpool, England, which was a rescheduled date from their preceding tour of the United Kingdom. It is possible that other unverified dates in Europe were also performed during this period. The concert has been described as one of the low points of Led Zeppelin's career, and the band never again returned to Italy.