Generate an appropriate single-sentence summary for the given text such that it includes the main topic of the text.

[Q]: It posted the news on the Marvel website, just hours after Diesel himself appeared to confirm the rumours by posting a photo on Facebook. The picture showed him hugging a model of the giant tree character, Groot. The live-action adventure is due in August 2014, directed by James Gunn and starring Chris Pratt as Star Lord. The Parks and Recreation star is joined by Bradley Cooper as Rocket Raccoon and Zoe Saldana as Gamora, along with Benicio del Toro, John C Reilly and Glenn Close. Diesel, who has starred in four of the six Fast & Furious films, will reprise his role in forthcoming movie Fast & Furious 7. He topped the US box office in September this year as the star of Riddick, his third outing as the convict turned anti-hero of the same name. Marvel's official announcement about his role in Guardians of the Galaxy was subtitled: "The action star will lend his booming voice to Marvel's epic Guardians of the Galaxy film!" 'Completely official' Director Gunn also took to Facebook to comment on the news. "Yep it is completely official. AND he's amazing," he wrote on his page. "I never knew someone could say I AM GROOT so many different ways and with such feeling (and that sounds like I'm kidding but I'm not!)." In October, Diesel posted a video of himself testing out stilts for a motion-capture role in Guardians of the Galaxy, "continuing his apparently fearless disregard for Marvel Studios' famed secrecy", according to Hollywood Reporter. In the video, he teased the role by saying he played "a seven-and-a-half-foot tree" with "one line in the movie." In response to a fan asking why Marvel had only just confirmed the news, Gunn said Diesel was not "officially attached until very recently". "He wanted to do it and we wanted him to do it but some kinks needed to be worked out," explained Gunn. Marvel said the film followed the adventures of an "unlikely cast of characters" who must "join forces to defeat a cosmic force of epic proportions".
[A]: Marvel Studios has confirmed action star Vin Diesel will voice the character of Groot in its space adventure, Guardians of the Galaxy.


[Q]: The male victim died on Derby Road, Nottingham, at about 00:40 GMT. A 37-year-old was arrested on suspicion of causing death by dangerous driving and driving while unfit through drink or drugs. Police want to hear from anyone who saw a silver car driving along Derby Road from the city centre and are appealing for dashcam footage. The road was closed between Cottesmore Road and Rolleston Drive but reopened at about 06:00. Follow BBC East Midlands on Facebook, Twitter, or Instagram. Send your story ideas to eastmidsnews@bbc.co.uk. Related Internet Links Nottinghamshire Police
[A]: A 19-year-old pedestrian has died after being hit by a car, leading to a man being arrested.


[Q]: As part of the £11m cuts, there will also changes to library opening hours. The Labour-led authority is to close Darlington Arts Centre in July and put the building up for sale. However, after concerns were raised during a public consultation exercise, a proposed volunteer scheme for school crossing patrols has been dropped. Darlington Arts Centre is currently used by youth groups, comedy clubs, craft classes and dance groups. Darlington for Culture, which has campaigned against its closure, said it was "gutted" it would be going ahead. However, Darlington Council said that so long as the building remained in council ownership there would be an annual cost of about £40,000 for insurance, security and maintenance.
[A]:
The closure of an arts centre, 115 job losses and scrapping of transport for faith schools are among a series of cuts agreed by Darlington councillors.


