Question: What is the last name of the person who collaborated with Ono on Some Time?  Answer the above question based on the context below:  Lennon and Ono moved to New York in August 1971 and immediately embraced US radical left politics. The couple released their "Happy Xmas (War Is Over)" single in December. During the new year, the Nixon administration took what it called a "strategic counter-measure" against Lennon's anti-war and anti-Nixon propaganda. The administration embarked on what would be a four-year attempt to deport him. Lennon was embroiled in a continuing legal battle with the immigration authorities, and he was denied permanent residency in the US; the issue would not be resolved until 1976.Some Time in New York City was recorded as a collaboration with Ono and was released in 1972 with backing from the New York band Elephant's Memory. A double LP, it contained songs about women's rights, race relations, Britain's role in Northern Ireland and Lennon's difficulties in obtaining a green card. The album was a commercial failure and was maligned by critics, who found its political sloganeering heavy-handed and relentless. The NME's review took the form of an open letter in which Tony Tyler derided Lennon as a "pathetic, ageing revolutionary". In the US, "Woman Is the Nigger of the World" was released as a single from the album and was televised on 11 May, on The Dick Cavett Show. Many radio stations refused to broadcast the song because of the word "nigger". Lennon and Ono gave two benefit concerts with Elephant's Memory and guests in New York in aid of patients at the Willowbrook State School mental facility. Staged at Madison Square Garden on 30 August 1972, they were his last full-length concert appearances. After George McGovern lost the 1972 presidential election to Richard Nixon, Lennon and Ono attended a post-election wake held in the New York home of activist Jerry Rubin. Lennon was depressed and got intoxicated; he left Ono embarrassed after he had sex with a female guest. Her song "Death of Samantha" was inspired by the incident.
Answer:
Lennon