What type of sentence is mr.smith family went to Jamestown york town and williamsburg?

The sentence "Mr. Smith's family went to Jamestown, Yorktown, and Williamsburg" is a simple sentence. It contains a subject ("Mr. Smith's family") and a predicate ("went to Jamestown, Yorktown, and Williamsburg") and expresses a complete thought. However, it contains a couple of grammatical errors, such as the incorrect use of the possessive form ("Mr. Smith's") and missing commas.