Which sentence does not belong?

(1) loch ness is a long and very deep lake in scotland. (2) since the year 565, many people there have told of seeing a strange animal with a long, snakelike neck and a small head. (3) most of those who have seen it say the loch ness monster is dark, has a hump like a camel, and is about 50 feet long. (4) camels live in desert regions and can go long periods of time without drinking water.