Pentenes are alkenes with the chemical formula C
5H
10. Each molecule contains one double bond within its molecular structure. Six different compounds are in this class, differing from each other by whether the carbon atoms are attached linearly or in a branched structure and whether the double bond has a cis or trans form.
{"fact":"Cats only use their meows to talk to humans, not each other. The only time they meow to communicate with other felines is when they are kittens to signal to their mother.","length":170}
{"fact":"A queen (female cat) can begin mating when she is between 5 and 9 months old.","length":77}
{"type":"standard","title":"South Rauceby Hall","displaytitle":"South Rauceby Hall","namespace":{"id":0,"text":""},"wikibase_item":"Q26461861","titles":{"canonical":"South_Rauceby_Hall","normalized":"South Rauceby Hall","display":"South Rauceby Hall"},"pageid":70112255,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/7/79/Lewis_and_Brangwyn_-_panoramio.jpg/330px-Lewis_and_Brangwyn_-_panoramio.jpg","width":320,"height":240},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/7/79/Lewis_and_Brangwyn_-_panoramio.jpg","width":2816,"height":2112},"lang":"en","dir":"ltr","revision":"1075083420","tid":"3285bc4d-9b30-11ec-b2e7-ad8a1bfd90ee","timestamp":"2022-03-03T20:26:25Z","description":"Grade II listed building in Lincolnshire, England","description_source":"local","coordinates":{"lat":53.0004,"lon":-0.4686},"content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/South_Rauceby_Hall","revisions":"https://en.wikipedia.org/wiki/South_Rauceby_Hall?action=history","edit":"https://en.wikipedia.org/wiki/South_Rauceby_Hall?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:South_Rauceby_Hall"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/South_Rauceby_Hall","revisions":"https://en.m.wikipedia.org/wiki/Special:History/South_Rauceby_Hall","edit":"https://en.m.wikipedia.org/wiki/South_Rauceby_Hall?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:South_Rauceby_Hall"}},"extract":"South Rauceby Hall, South Rauceby, Lincolnshire, England is a country house dating from the mid-19th century. It was designed by William Burn in 1842 for Anthony Peacock Willson. Inherited by the Cracroft-Amcotts family, it remains a private home. It is a Grade II listed building.","extract_html":"
South Rauceby Hall, South Rauceby, Lincolnshire, England is a country house dating from the mid-19th century. It was designed by William Burn in 1842 for Anthony Peacock Willson. Inherited by the Cracroft-Amcotts family, it remains a private home. It is a Grade II listed building.
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{"type":"standard","title":"Charles Oberthür (composer)","displaytitle":"Charles Oberthür (composer)","namespace":{"id":0,"text":""},"wikibase_item":"Q18923331","titles":{"canonical":"Charles_Oberthür_(composer)","normalized":"Charles Oberthür (composer)","display":"Charles Oberthür (composer)"},"pageid":45349351,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/a/af/Charles_Oberth%C3%BCr.jpg/330px-Charles_Oberth%C3%BCr.jpg","width":320,"height":526},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/a/af/Charles_Oberth%C3%BCr.jpg","width":898,"height":1475},"lang":"en","dir":"ltr","revision":"1175225151","tid":"493ece1f-5249-11ee-b7de-66902f29a84f","timestamp":"2023-09-13T15:22:01Z","description":"German-born harp player and composer","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Charles_Oberth%C3%BCr_(composer)","revisions":"https://en.wikipedia.org/wiki/Charles_Oberth%C3%BCr_(composer)?action=history","edit":"https://en.wikipedia.org/wiki/Charles_Oberth%C3%BCr_(composer)?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Charles_Oberth%C3%BCr_(composer)"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Charles_Oberth%C3%BCr_(composer)","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Charles_Oberth%C3%BCr_(composer)","edit":"https://en.m.wikipedia.org/wiki/Charles_Oberth%C3%BCr_(composer)?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Charles_Oberth%C3%BCr_(composer)"}},"extract":"Charles Oberthür was a German harpist and composer active in Germany, Switzerland and England.","extract_html":"
Charles Oberthür was a German harpist and composer active in Germany, Switzerland and England.
"}