q... Passage: Although the Colossus was preserved, much of the Domus Aurea was torn down. The lake was filled in and the land reused as the location for the new Flavian Amphitheatre. Gladiatorial schools and other support buildings were constructed nearby within the former grounds of the Domus Aurea. Vespasian's decision to build the Colosseum on the site of Nero's lake can be seen as a populist gesture of returning to the people an area of the city which Nero had appropriated for his own use. In contrast to many other amphitheatres, which were located on the outskirts of a city, the Colosseum was constructed in the city centre; in effect, placing it both symbolically and precisely at the heart of Rome.

Question: Based on this passage, what was the colosseum built on top of?
a... The relevant information is: Vespasian's decision to build the Colosseum on the site of Nero's lake can be seen as a populist gesture of returning to the people an area of the city which Nero had appropriated for his own use.
The answer is the site of Nero 's lake

q... Context: David has stood on display at Florence's Galleria dell'Accademia since 1873. In addition to the full-sized replica occupying the spot of the original in front of the Palazzo Vecchio, a bronze version overlooks Florence from the Piazzale Michelangelo. The plaster cast of David at the Victoria and Albert Museum has a detachable plaster fig leaf which is displayed nearby. Legend claims that the fig leaf was created in response to Queen Victoria's shock upon first viewing the statue's nudity, and was hung on the figure prior to royal visits, using two strategically placed hooks. In 2010, the Italian government began a campaign to solidify its claim to the iconic marble statue.

Question: where is the original statue of david in italy?
a... The relevant sentence in the passage is: David has stood on display at Florence's Galleria dell'Accademia since 1873.
The answer is Florence 's Galleria dell'Accademia

q... The NHL Collective Bargaining Agreement (CBA) is the basic contract between the National Hockey League (NHL) team owners and the NHL Players' Association (NHLPA), designed to be arrived at through the typical labour-management negotiations of collective bargaining. The most recent agreement, tentatively reached on January 6, 2013 after a labour dispute which cancelled 510 regular season games of the 2012 -- 13 season, was ratified by the league's Board of Governors on January 9, 2013, as well as by the NHLPA membership three days later on January 12, 2013. The current CBA is a 10-year deal, the longest in NHL history, expiring after the 2021 -- 22 season.

Answer this question based on the passage: when does the nhl collective bargaining agreement expires?
a... The important part for answering this question is: The current CBA is a 10-year deal, the longest in NHL history, expiring after the 2021 -- 22 season.
The answer is after the 2021 -- 22 season

q... Ozzy Osbourne -- vocals, harmonica Tony Iommi -- guitar, slide guitar Geezer Butler -- bass Bill Ward -- drums

Answer this question: who played harmonica on the wizard black sabbath?
a...
This is the relevant information: Ozzy Osbourne -- vocals, harmonica
The answer is Ozzy Osbourne