Please answer the following question: Given the following context:  Pod was released in the UK on May 29, 1990 by 4AD. Watts-Russell planned the date to be not too close to the release of the Pixies' Bossanova two and a half months later, for more effective publicity of both albums.  Watts-Russell believed the album would be better suited to a US independent distribution label rather than the Pixies' American distributor Elektra, and licensed Pod to Rough Trade America. When this division of Rough Trade went bankrupt, Elektra assumed distribution of Pod in the US. Deal has noted that the Breeders did not receive any royalties from initial US sales because of Rough Trade's bankruptcy.The album was widely anticipated by the British music press due to the involvement of Deal and Donelly—known from their highly regarded work with the Pixies and Throwing Muses, respectively—and Albini, who likewise had a strong reputation for his previous engineering work. It reached number 22 in the UK, where it was promoted by a full-page ad in Melody Maker, and number 73 in the Netherlands. Pod sold moderately well, although Deal has noted it "never sold [anything]" compared to their next album, Last Splash (1993), which was certified platinum in the US and silver in the UK.Deal took the idea for the album's title from a painting that she saw in Boston; for her, the word "pod" evoked a uterus, which Wiggs has noted relates to the theme of fertility and the group's name. The cover art was designed by longtime 4AD album designer Vaughan Oliver and employs photography by Kevin Westenberg. Oliver, in an attempt to seduce Deal, whom he believed would appreciate the humor, attached a belt of dead eels over his underwear, which he intended as phallic symbols. He performed a fertility dance, while Westenberg took pictures of him using a long exposure to achieve the blurring and other visual effects.  answer the following question:  What is the last name of the person who performed a fertility dance, while Westenberg took pictures of him?
Answer:
Oliver