input: Country music star Keith Urban has consistently cited Mellencamp's influence on his music. It originated when Mellencamp's Lonesome Jubilee tour went to Australia in 1988; Urban was in attendance at one of the concerts and described the experience as an "epiphany." "'I Need A Lover' and 'Hurts So Good' were massive hits in Australia", Urban told the Vancouver Sun in 2016. "I played so many of those songs in my cover bands. But for me, The Lonesome Jubilee was the defining record and tour. I've since gotten to know John a little bit and it was one of the greatest opportunities I've ever had to meet a hero and tell him about a concert you went to when you were a nobody and how much of an effect that concert had on me. "I just remember that moment: Here's that full-on rock section, with Kenny Aronoff on drums and Larry Crane a rock guitarist with swagger. But there was also Lisa Germano on fiddle, they had an accordion player, there was an acoustic guitarist. I was hit by lightning by that concert. I said to John, 'I didn't walk away thinking: I want to do that. I walked away feeling: I get it -- just put all the things you love into what you do.' It was singularly the most important concert I've ever been to in my life because it showed me the way." Urban went into more detail on the impact Mellencamp's Lonesome Jubilee Tour concert had on him when CMT asked him about the concert that most influenced him: "The most impactful one for me was probably John Mellencamp in '88 or '89 on the Lonesome Jubilee Tour. It was singularly the most epiphany experience I'd ever had at a concert. Prior to that, from the age of 6 or 7, I was somewhere in between Top 40, country and, 'Who the hell am I and what do I do?' But The Lonesome Jubilee came out. I loved 'Paper in Fire' and 'Check It Out' because it was such a melting pot of things. But when I went to see him live, his band was so phenomenally good. Great, great band. And I remember watching the concert - and the light went off. There's a rock rhythm section, but there's acoustic guitar, electric guitar. This fiddle, this accordion. He's singing these rural lyrics, but he's got swagger and attitude for days. It was like everything came together. I got to talk to John years later, and I said to him how much that concert changed my life. I didn't leave that concert thinking 'I want to be Mellencamp.' I went away going, 'Take all of your influences and make your own thing.' It was such a liberating experience for me." Urban has covered numerous Mellencamp songs in his concerts over the years, including "Hurts So Good", "Jack and Diane", "Authority Song", and "Rumbleseat". In 2015, Urban and Mellencamp performed "Pink Houses" together twice during nationally televised events. Urban's 2015 hit single "John Cougar, John Deere, John 3:16" further illustrated Mellencamp's influence on his music.

Answer this question "Is there anything else I should know about this?"
output: it was one of the greatest opportunities I've ever had to meet a hero and tell him about a concert you went to

Question: Ai Weiwei (Chinese: Ai Wei Wei ; pinyin: Ai Weiwei, English pronunciation ; born 28 August 1957 in Beijing) is a Chinese contemporary artist and activist. His father's (Ai Qing) original surname was written Jiang (Jiang ). Ai collaborated with Swiss architects Herzog & de Meuron as the artistic consultant on the Beijing National Stadium for the 2008 Olympics.

On 22 June 2011, the Chinese authorities released Ai from jail after almost three months' detention on charges of tax evasion. Beijing Fa Ke Cultural Development Ltd. (Chinese: Bei Jing Fa Ke Wen Hua Gong Si ), a company Ai controlled, had allegedly evaded taxes and intentionally destroyed accounting documents. State media also reports that Ai was granted bail on account of Ai's "good attitude in confessing his crimes", willingness to pay back taxes, and his chronic illnesses. According to the Chinese Foreign Ministry, he is prohibited from leaving Beijing without permission for one year. Ai's supporters widely viewed his detention as retaliation for his vocal criticism of the government. On 23 June 2011, professor Wang Yujin of China University of Political Science and Law stated that the release of Ai on bail shows that the Chinese government could not find any solid evidence of Ai's alleged "economic crime". On 24 June 2011, Ai told a Radio Free Asia reporter that he was thankful for the support of the Hong Kong public, and praised Hong Kong's conscious society. Ai also mentioned that his detention by the Chinese regime was hellish (Chinese: Jiu Si Yi Sheng ), and stressed that he is forbidden to say too much to reporters. After his release, his sister gave some details about his detention condition to the press, explaining that he was subjected to a kind of psychological torture: he was detained in a tiny room with constant light, and two guards were set very close to him at all times, and watched him constantly. In November, Chinese authorities were again investigating Ai and his associates, this time under the charge of spreading pornography. Lu was subsequently questioned by police, and released after several hours though the exact charges remain unclear. In January 2012, in its International Review issue Art in America magazine featured an interview with Ai Weiwei at his home in China. J.J. Camille (the pen name of a Chinese-born writer living in New York), "neither a journalist nor an activist but simply an art lover who wanted to talk to him" had travelled to Beijing the previous September to conduct the interview and to write about his visit to "China's most famous dissident artist" for the magazine. On 21 June 2012, Ai's bail was lifted. Although he is allowed to leave Beijing, the police informed him that he is still prohibited from traveling to other countries because he is "suspected of other crimes," including pornography, bigamy and illicit exchange of foreign currency. Until 2015, he remained under heavy surveillance and restrictions of movement, but continues to criticize through his work. In July 2015, he was given a passport and may travel abroad.

Using a quote from the above article, answer the following question: what was he charged with?
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Answer:
Ai's supporters widely viewed his detention as retaliation for his vocal criticism of the government.