premise: Exactly six of an artist's paintings, entitled Quarterion, Redemption, Sipapu, Tesseract, Vale, and Zelkova, are sold at auction. Three of the paintings are sold to a museum, and three are sold to a private collector. Two of the paintings are from the artist's first (earliest) period, two are from her second period, and two are from her third (most recent) period. The private collector and the museum each buy one painting from each period. The following conditions hold: Sipapu, which is sold to the private collector, is from an earlier period than Zelkova, which is sold to the museum. Quarterion is not from an earlier period than Tesseract. Vale is from the artist's second period. If Zelkova is sold to the same buyer as Tesseract and is from the period immediately preceding Tesseract's period, then which one of the following must be true?
hypothesis: Redemption is sold to the private collector.