Question: How long did the photographer who lived in St. Helena California work for National Geographic? Passage 1:In 1998, one week after winning E3 Harelbeke and the Brabantse Pijl in the same weekend, he won the Tour of Flanders, thereby equaling the race's record of three wins. One week later, Museeuw made a horrific fall in Paris–Roubaix on the Trouée d'Arenberg cobbled sector, leaving his kneeknap shattered. On top came a dangerous gangrene infection which nearly forced doctors to amputate his left leg. He fought back and resumed cycling after a long healing process, finishing third in the Tour of Flanders of 1999 and ninth in Paris–Roubaix, exactly one year after his horror crash. In 2000 he won Paris–Roubaix a second time after a 44 km solo. Upon crossing the finish line in victory, he lifted his left leg, pointing to his knee as a reminder of the injury that had almost ended his career two years before. Later that year, he was again injured in a motor cycle accident, causing a severe head trauma and several days in a coma. His dogged determination and powerful riding style won him legions of fans all over the world and made him all the more popular in his native Flanders.
 Passage 2:A Colorado low is a low-pressure area that forms in southeastern Colorado or northeastern New Mexico, typically in the winter. After forming, the system moves across the Great Plains. Colorado lows can produce heavy wintry precipitation, and have a general east to northeast movement, impacting regions as far north as Winnipeg and as far east as the Atlantic coast. If upper level conditions are right, the jet stream can push the low farther south, bringing wintry precipitation as far as Texas. When pushed this far south, the system is often referred to as a "blue norther". On the more typical track, a Colorado low can be similar to an Alberta clipper. In the winter Colorado lows are responsible for a majority of the snow that the Midwest receives; however, summer systems can trigger long-lasting convective systems, including severe weather. Spring and early summer Colorado low cyclogenesis can result in significant tornado outbreaks over the Great Plains and Midwest.
 Passage 3:In January 1996 former National Geographic photographer Charles O'Rear was on his way from his home in St. Helena, California, in the Napa Valley north of San Francisco, to visit his girlfriend, Daphne Irwin (whom he later married), in the city, as he did every Friday afternoon. He was working with Irwin on a book about the wine country. He was particularly alert for a photo opportunity that day, since a storm had just passed over and other recent winter rains had left the area especially green. Driving along the Sonoma Highway (California State Route 12 and 121) he saw the hill, free of the vineyards that normally covered the area; they had been pulled out a few years earlier following a phylloxera infestation. "There it was! My God, the grass is perfect! It's green! The sun is out; there's some clouds," he remembered thinking. He stopped somewhere near the Napa–Sonoma county line and pulled off the road to set his Mamiya RZ67 medium-format camera on a tripod, choosing Fujifilm's Velvia, a film often used among nature photographers and known to saturate some colors. O'Rear credits that combination of camera and film for the success of the image. "It made the difference and, I think, helped the 'Bliss' photograph stand out even more," he said. "I think that if I had shot it with 35 mm, it would not have nearly the same effect." While he was setting up his camera, he said it was possible that the clouds in the picture came in. "Everything was changing so quickly at that time." He took four shots and got back into his truck. According to O'Rear, the image was not digitally enhanced or manipulated in any way.

Output: 3