Problem: Background: Panic! at the Disco is an American rock band from Las Vegas, Nevada, formed in 2004 and featuring the current lineup of vocalist Brendon Urie, accompanied on tour by guitarist Kenneth Harris, drummer Dan Pawlovich, and bassist Nicole Row. Founded by childhood friends Ryan Ross, Spencer Smith, Brent Wilson and Urie, Panic! at the Disco recorded its first demos while its members were in high school. Shortly after, the band recorded and released its debut studio album, A Fever You Can't Sweat Out (2005).
Context: On April 2, 2015, Smith announced that he had officially left the band. That same month, Urie revealed in an interview with Kerrang! that he was working on new material for the band's fifth studio album. On April 20, 2015, Urie released "Hallelujah" as a single without any previous formal announcements. It debuted on the Billboard Hot 100 at No. 40, the band's second highest ever after "I Write Sins Not Tragedies". The band performed at the KROQ Weenie Roast on May 16, 2015. On September 1, 2015, another song from the fifth studio album, "Death of a Bachelor", premiered on an Apple Music broadcast hosted by Pete Wentz. The second single, "Victorious" was released at the end of the month. On October 22, 2015, through the band's official Facebook page, Urie announced the new album as Death of a Bachelor with a scheduled release date of January 15, 2016. It is the first album written and composed by Urie with a team of writers, as the status of Weekes changed from an official member to that of a touring member once again. Weekes' status was rumored during the promotion of Death of a Bachelor that he was no longer an official member, until it was confirmed by Weekes himself on October 24, 2015, via Twitter that he was "not contributing creatively anymore". The third single "Emperor's New Clothes" was released on the same day, along with the official music video. "LA Devotee" was released November 26 as a promotional single. On December 31, 2015, the band released "Don't Threaten Me with a Good Time". The band co-headlined the Weezer & Panic! at the Disco Summer Tour 2016 with Weezer from June to August 2016. The band released a cover of Queen's "Bohemian Rhapsody" in August 2016, on the Suicide Squad soundtrack album. On September 22, 2016, the band released the music video for "LA Devotee". With the release came the announcement of the Death of a Bachelor Tour in 2017. MisterWives and Saint Motel were announced as the opening acts. In a December 2016 interview, Urie said that he hoped to make a music video for every song on the album Death of a Bachelor.
Question: what was death of a bachelor
Answer: Urie announced the new album as Death of a Bachelor with a scheduled release date of January 15, 2016.

Problem: Background: James Watt (30 January 1736 (19 January 1736 OS) - 25 August 1819) was a Scottish inventor, mechanical engineer, and chemist who improved on Thomas Newcomen's 1712 Newcomen steam engine with his Watt steam engine in 1781, which was fundamental to the changes brought by the Industrial Revolution in both his native Great Britain and the rest of the world. While working as an instrument maker at the University of Glasgow, Watt became interested in the technology of steam engines. He realised that contemporary engine designs wasted a great deal of energy by repeatedly cooling and reheating the cylinder. Watt introduced a design enhancement, the separate condenser, which avoided this waste of energy and radically improved the power, efficiency, and cost-effectiveness of steam engines.
Context: From an early age Watt was very interested in chemistry. In late 1786, while in Paris, he witnessed an experiment by Berthollet in which he reacted hydrochloric acid with manganese dioxide to produce chlorine. He had already found that an aqueous solution of chlorine could bleach textiles, and had published his findings, which aroused great interest among many potential rivals. When Watt returned to Britain, he began experiments along these lines with hopes of finding a commercially viable process. He discovered that a mixture of salt, manganese dioxide and sulphuric acid could produce chlorine, which Watt believed might be a cheaper method. He passed the chlorine into a weak solution of alkali, and obtained a turbid solution that appeared to have good bleaching properties. He soon communicated these results to James McGrigor, his father-in-law, who was a bleacher in Glasgow. Otherwise he tried to keep his method a secret. With McGrigor and his wife Annie, he started to scale up the process, and in March 1788, McGrigor was able to bleach 1500 yards of cloth to his satisfaction. About this time Berthollet discovered the salt and sulphuric acid process, and published it so it became public knowledge. Many others began to experiment with improving the process, which still had many shortcomings, not the least of which was the problem of transporting the liquid product. Watt's rivals soon overtook him in developing the process, and he dropped out of the race. It was not until 1799, when Charles Tennant patented a process for producing solid bleaching powder (calcium hypochlorite) that it became a commercial success. By 1794 Watt had been chosen by Thomas Beddoes to manufacture apparatus to produce, clean and store gases for use in the new Pneumatic Institution at Hotwells in Bristol. Watt continued to experiment with various gases for several years, but by 1797 the medical uses for the "factitious airs" had come to a dead end.
Question: Who is McGrigor?
Answer:
his father-in-law,