Simplify the following text for a Grade 4 native English-speaking person.
Original: The highway proceeds eastward on East Market Street , soon exiting Rhinebeck while it runs parallel to the Landsman Kill River , a minor tributary of the Hudson River , which is sometimes known as Landsman Kill or Landsmankill .
Simplified: The highway goes to the east , and is called East Market Street . It soon leaves Rhinebeck , while it runs next to a small creek sometimes known as the Landsman Kill .