title: Rocky Mountains
context: The Rocky Mountains are often defined as stretching from the Liard River in British Columbia[3] south to the Rio Grande in New Mexico. The Rockies vary in width from 110 to 480 kilometres (70 to 300mi). The Rocky Mountains are notable for containing the highest peaks in central North America. The range's highest peak is Mount Elbert located in Colorado at 4,401 metres (14,440ft) above sea level. Mount Robson in British Columbia, at 3,954 metres (12,972ft), is the highest peak in the Canadian Rockies.
question: How tall are the Colorado Rockies?
answers: 4,401 metres (14,440ft) above sea level