Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Episode # | The Wørd | Guest | Introductory phrase | Original airdate | Production code |
| --- | --- | --- | --- | --- | --- |
| 669.0 | "Siren Song" | Nicole Miller, Jessica Smith, Harold Ford, Jr. | None | February 1 | 6017.0 |
| 673.0 | "Faux 'n' Tell" | Jonathan Safran Foer | None | February 8 | 6021.0 |
| 674.0 | "None" | Chris Dodd , George Stephanopoulos | None | February 9 | 6022.0 |
| 676.0 | "Political Suicide" | Al Michaels , David Ross | None | February 11 | 6024.0 |
| 678.0 | "None" | Lindsey Vonn , Bob Costas | None | February 23 | 6026.0 |
Question:
Who were the guests in the episode with production code 6021? 
Answer:
Jonathan Safran Foer