Please answer this: Extract the answer to the question from the following context. Question: What was changed by the dutch? Context: Traditional English ale was made solely from fermented malt. The practice of adding hops to produce beer was introduced from the Netherlands in the early 15th century. Alehouses would each brew their own distinctive ale, but independent breweries began to appear in the late 17th century. By the end of the century almost all beer was brewed by commercial breweries.
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Answer: The practice of adding hops


Please answer this: Extract the answer to the question from the following context. Question: What kind of rules came in the 1970's? Context: The technical rules for the Japanese version of men's rhythmic gymnastics came around the 1970s. For individuals, only four types of apparatus are used: the double rings, the stick, the rope, and the clubs. Groups do not use any apparatus. The Japanese version includes tumbling performed on a spring floor. Points are awarded based a 10-point scale that measures the level of difficulty of the tumbling and apparatus handling. On November 27–29, 2003, Japan hosted first edition of the Men's Rhythmic Gymnastics World Championship.
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Answer: The technical rules for the Japanese version of men's rhythmic gymnastics


Please answer this: Extract the answer to the question from the following context. Question: What painters used these techniques? Context: The painters of the early Renaissance used two traditional lake pigments, made from mixing dye with either chalk or alum, kermes lake, made from kermes insects, and madder lake, made from the rubia tinctorum plant. With the arrival of cochineal, they had a third, carmine, which made a very fine crimson, though it had a tendency to change color if not used carefully. It was used by almost all the great painters of the 15th and 16th centuries, including Rembrandt, Vermeer, Rubens, Anthony van Dyck, Diego Velázquez and Tintoretto. Later it was used by Thomas Gainsborough, Seurat and J.M.W. Turner.
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Answer:
Rembrandt, Vermeer, Rubens, Anthony van Dyck, Diego Velázquez and Tintoretto