In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
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Question: What is the most expensive street in the country?, Context: The retail trade in Cork city includes a mix of both modern, state of the art shopping centres and family owned local shops. Department stores cater for all budgets, with expensive boutiques for one end of the market and high street stores also available. Shopping centres can be found in many of Cork's suburbs, including Blackpool, Ballincollig, Douglas, Ballyvolane, Wilton and Mahon Point. Others are available in the city centre. These include the recently[when?] completed development of two large malls The Cornmarket Centre on Cornmarket Street, and new the retail street called "Opera Lane" off St. Patrick's Street/Academy Street. The Grand Parade scheme, on the site of the former Capitol Cineplex, was planning-approved for 60,000 square feet (5,600 m2) of retail space, with work commencing in 2016. Cork's main shopping street is St. Patrick's Street and is the most expensive street in the country per sq. metre after Dublin's Grafton Street. As of 2015[update] this area has been impacted by the post-2008 downturn, with many retail spaces available for let.[citation needed] Other shopping areas in the city centre include Oliver Plunkett St. and Grand Parade. Cork is also home to some of the country's leading department stores with the foundations of shops such as Dunnes Stores and the former Roches Stores being laid in the city. Outside the city centre is Mahon Point Shopping Centre.

Answer: Dublin's Grafton Street


Question: Why could there be reasonable doubt about the validity of what was stated that she said?, Context: In May 2007, The Daily Telegraph, citing unnamed sources, reported that the Queen was "exasperated and frustrated" by the policies of the British Prime Minister, Tony Blair, that she was concerned the British Armed Forces were overstretched in Iraq and Afghanistan, and that she had raised concerns over rural and countryside issues with Blair. She was, however, said to admire Blair's efforts to achieve peace in Northern Ireland. On 20 March 2008, at the Church of Ireland St Patrick's Cathedral, Armagh, the Queen attended the first Maundy service held outside England and Wales. At the invitation of the Irish President, Mary McAleese, the Queen made the first state visit to the Republic of Ireland by a British monarch in May 2011.

Answer: unnamed sources


Question: What are antibodies continually communicating with?, Context: The humoral (antibody) response is defined as the interaction between antibodies and antigens. Antibodies are specific proteins released from a certain class of immune cells known as B lymphocytes, while antigens are defined as anything that elicits the generation of antibodies ("anti"body "gen"erators). Immunology rests on an understanding of the properties of these two biological entities and the cellular response to both.

Answer:
antigens