Suppose Mount Everest is the highest mountain in the world, with an elevation of 29,032 feet above sea level. It is located in the Himalayas on the border between Nepal and Tibet, China. The first confirmed ascent to the summit was made by Sir Edmund Hillary and Tenzing Norgay on May 29, 1953.
Can we infer that "Mount Everest has been climbed by every professional mountaineer."? Yes, no, or maybe?