How to Use "sitter" with Example Sentences

1. I heard bureau was sending a baby sitter ?
2. In contrast sitter children are careful and astute and tend to learn by observing instead of by acting .
3. He is a great baby sitter !
4. He hugged me , just as the sitter arrived .
5. In her view the work was a collaboration between two 20th-century geniuses : the artist and his sitter .