Question: Charles Antenen was born in what Swiss city  located in the Jura mountains at an altitude of 1000 m

Context paragraphs:
Geissfluegrat: The Geissfluegrat is a minor summit east of the Geissflue, in the eastern Jura Mountains.  It is located between the Swiss cantons of Aargau and Solothurn.  With an elevation of 908 metres above sea level, the Geissfluegrat is the highest point in Aargau.  It is also the easternmost summit above 900 metres in the Jura Mountains.

Jean Claude Jacob: Jean Claude Jacob was a serf from the Jura Mountains, supposedly 120 years old, who was brought from his native place to figure as "dean of the human race" in Paris at the Festival of the Federation of July 1790.  Thomas Carlyle wrote of Jacob in :Having seen the Human Species itself, to have seen the 'Dean of the Human Species,' ceased now to be a miracle.  Such 'Doyen du Genre Humain, Eldest of Men,' had shewn himself there, in these weeks: Jean Claude Jacob, a born Serf, deputed from his native Jura Mountains to thank the National Assembly for enfranchising them.  On his bleached worn face are ploughed the furrowings of one hundred and twenty years.  He has heard dim patois-talk, of immortal Grand-Monarch victories; of a burnt Palatinate, as he toiled and moiled to make a little speck of this Earth greener; of Cevennes Dragoonings; of Marlborough going to the war.  Four generations have bloomed out, and loved and hated, and rustled off: he was forty-six when Louis Fourteenth died.  The Assembly, as one man, spontaneously rose, and did reverence to the Eldest of the World; old Jean is to take seance among them, honourably, with covered head.  He gazes feebly there, with his old eyes, on that new wonder-scene; dreamlike to him, and uncertain, wavering amid fragments of old memories and dreams.  For Time is all growing unsubstantial, dreamlike; Jean's eyes and mind are weary, and about to close, — and open on a far other wonder-scene, which shall be real.  Patriot Subscription, Royal Pension was got for him, and he returned home glad; but in two months more he left it all, and went on his unknown way.

Aargau Jura Park: The Aargau Jura Park is located north of Aarau, between the rivers Aare and Rhine, in the Swiss canton of Aargau.  It straddles the border between Jura and Basel.  It spans 244 km2 and reaches up to 350 m above the valley floor.  The park is mainly located on the Jurassic Plateau, between Frick and Villigen, and also encompasses the Aargau Jura mountains and valleys.  The northern area includes sparse pine forests, fruit orchids, rocky steppes, dry meadows and terraced vineyards, while the southern region fosters forests and wildlife.  It was declared a regional nature park of national importance in 2012 by the Federal Office for the Environment.

Chasseral: The Chasseral is a mountain of the Jura Mountains, overlooking Lake Biel in the Swiss canton of Bern.  With an elevation of 1,606 metres above sea level, the Chasseral is the highest summit in the canton of Bern outside the Alps.  It is also both the northernmost and easternmost mountain reaching over 1,500 metres in the Jura Mountains.  West of the summit is located the Chasseral Ouest (1,552 m), where runs the border with the canton of Neuchâtel.  The Chasseral Pass is located further on the west.

Fortified Sector of the Jura: The Fortified Sector of the Jura ("Secteur Fortifiée du Jura") was the French military organization that in 1940 controlled the French frontier with Switzerland in the general area of Besançon.  The area was lightly fortified, since the Swiss border was regarded as a low-risk frontier, save for the possibility of an advance from Germany through Switzerland into France.  The Jura Mountains and the Doubs River presented natural barriers to invasion, allowing defenses to concentrate on a few points of potential access.  The SF Jura was bordered on the east by the Fortified Sector of Montbéliard.

Fort de Pré-Giroud: The Fort de Pré-Giroud, also known as the Fort de Vallorbe, is a 20th-century Swiss fortification located in the Jura Mountains near the Swiss border with France.  The fort defended the Col de Jougne at Vallorbe, one of the few points in the Jura that could be easily traversable by an invading force.  It was a component of the Swiss Border Line of defenses.  Built between 1937 and 1939, the fort covers the Swiss end on the Mont d'Or railroad tunnel and the Joux valley.  It is armed with three artillery blocks for 75mm guns and two machine gun blocks.  All are camouflaged, the artillery blocks as rock formations, and the machine gun blocks as houses.  Deactivated as a military post in the 1980s, it is operated as a museum.

Vallée de Joux: The Vallée de Joux is a valley of the Jura Mountains mainly in the Swiss Canton of Vaud.  The valley also continues into France (Département of Jura) at its higher, south-western, end.  Located 30 miles (50 km) north of Geneva and north-west of Lausanne, its mean elevation is over 3300 feet (1000 metres).  There are three Swiss lakes in the "Vallée de Joux" : the lac de Joux (around 6 miles (10 km) long), the lac Brenet and the lac Ter.  The French border runs along the northern edge of the valley until, about 10 km west of the lac de Joux, the base of the valley becomes French territory.  The valley then continues to climb gently towards the Lac des Rousses and the ski resort of Les Rousses.

Charles Antenen: Charles Antenen (3 November 1929 in La Chaux-de-Fonds – 20 May 2000) was a Swiss football (soccer) player, who was nicknamed "Kiki".

La Chaux-de-Fonds: La Chaux-de-Fonds (] ) is a Swiss city of the district of La Chaux-de-Fonds in the canton of Neuchâtel.  It is located in the Jura mountains at an altitude of 1000 m, a few kilometres south of the French border.  After Geneva and Lausanne, it is the third largest city located completely in the Romandie, the French-speaking part of the country, with a population (as of December 2016 ) of .

Wisenberg: The Wisenberg (1,002 m) is a wooded mountain of the Jura Mountains, located between Häfelfingen and Wisen in northern Switzerland.  The summit lies within the canton of Basel-Landschaft, near the border with the canton of Solothurn.  The Wisenberg is both the northernmost and easternmost summit above 1,000 metres in the Jura Mountains.

Supporting paragraphs: Charles Antenen La Chaux-de-Fonds
Answer: La Chaux-de-Fonds