Question: An Evening with Olivia Newton-John was which number concert tour by Australian singer Olivia Newton-John, the second leg began only in February 2009, with the opening concert having Barry Gibb  as special guest on some songs?
Sentence (from "A Summer Night with Olivia Newton-John"): The tour name drifts from her 1978 hit, "Summer Nights", from the musical film "Grease".
Relevant evidence: No