Question: In which mountain range is the the Fitzroy ?

Context paragraphs:
Marcos Couch: Marcos José Couch (Buenos Aires, June 14, 1960), Argentinean mountain climber, known for his professional achievements in mountains such as the Shishapangma in Tibet, or the Fitz Roy in Patagonia.  Since 1987 he is a mountain guide and has been working internationally.

Patagonia: Patagonia (] ) is a sparsely populated region located at the southern end of South America, shared by Argentina and Chile.  The region comprises the southern section of the Andes mountains as well as the deserts, pampas and grasslands east of this southern portion of the Andes.  Patagonia has two coasts: western facing the Pacific Ocean and eastern facing the Atlantic Ocean.

Supporting paragraphs: Marcos Couch Patagonia
Answer: the Andes