Question: Extract the answer to the question from the following context. Question: During what length of time were the most upgrades done on the port? Context: The port on Montevideo Bay is one of the reasons the city was founded. It gives natural protection to ships, although two jetties now further protect the harbour entrance from waves. This natural port is competitive with the other great port of Rio de la Plata, Buenos Aires. The main engineering work on the port occurred between the years 1870 and 1930. These six decades saw the construction of the port's first wooden pier, several warehouses in La Aguada, the north and south Rambla, a river port, a new pier, the dredged river basin and the La Teja refinery. A major storm in 1923 necessitated repairs to many of the city's engineering works. Since the second half of the 20th century, physical changes have ceased, and since that time the area has degraded due to national economic stagnation.
Answer: six decades

Question: Extract the answer to the question from the following context. Question: what sentence is in quotation? Context: In their first meeting after the election the group's Members of Parliament decided to adopt the name "The Labour Party" formally (15 February 1906). Keir Hardie, who had taken a leading role in getting the party established, was elected as Chairman of the Parliamentary Labour Party (in effect, the Leader), although only by one vote over David Shackleton after several ballots. In the party's early years the Independent Labour Party (ILP) provided much of its activist base as the party did not have individual membership until 1918 but operated as a conglomerate of affiliated bodies. The Fabian Society provided much of the intellectual stimulus for the party. One of the first acts of the new Liberal Government was to reverse the Taff Vale judgement.
Answer: "The Labour Party"

Question: Extract the answer to the question from the following context. Question: Madonna was acclaimed for what medium? Context: Academics noted that with her videos, Madonna was subtly reversing the usual role of male as the dominant sex. This symbolism and imagery was probably the most prevalent in the music video for "Like a Prayer". The video included scenes of an African-American church choir, Madonna being attracted to a statue of a black saint, and singing in front of burning crosses. This mix of the sacred and the profane upset the Vatican and resulted in the Pepsi commercial withdrawal. In 2003, MTV named her "The Greatest Music Video Star Ever" and said that "Madonna's innovation, creativity and contribution to the music video art form is what won her the award."
Answer:
music video