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:
| No. in series | Title | Directed By | Written By | air date | Production code |
| --- | --- | --- | --- | --- | --- |
| 1 | "A Harvest of Friends" | Michael Landon | Blanche Hanalis , John Hawkins & William Putman | September 11, 1974 | 1002 |
| 2 | "Country Girls" | William F. Claxton | Blanche Hanalis & Juanita Bartlett | September 18, 1974 | 1001 |
| 3 | "100 Mile Walk" | William F. Claxton | Blanche Hanalis & Ward Hawkins | September 25, 1974 | 1003 |
| 4 | "Mr. Edwards' Homecoming" | Michael Landon | Blanche Hanalis & Joel Murcott | October 2, 1974 | 1004 |
| 5 | "The Love of Johnny Johnson" | William F. Claxton | Blanche Hanalis & Gerry Day | October 9, 1974 | 1005 |
| 6 | "If I Should Wake Before I Die" | Victor French | Blanche Hanalis & Harold Swanton | October 23, 1974 | 1006 |
| 7 | "Town Party, Country Party" | Alf Kjellin | Blanche Hanalis & Juanita Bartlett | October 30, 1974 | 1007 |
| 8 | "Ma's Holiday" | Leo Penn | Blanche Hanalis & Dale Eunson | November 6, 1974 | 1010 |
| 9 | "School Mom" | William F. Claxton | Blanche Hanalis , Ward Hawkins & Jean Rouverol | November 13, 1974 | 1011 |
| 10 | "The Raccoon" | William F. Claxton | Blanche Hanalis & Joseph Bonaduce | November 20, 1974 | 1013 |
| 11 | "The Voice of Tinker Jones" | Leo Penn | Tony Kayden & Michael Russnow | December 4, 1974 | 1012 |
| 12 | "The Award" | William F. Claxton | Michael Landon | December 11, 1974 | 1014 |
| 13/14 | "The Lord is My Shepherd" | Michael Landon | Michael Landon | December 18, 1974 | 1008/1009 |
| 15 | "Christmas at Plum Creek" | William F. Claxton | Arthur Heinemann | December 25, 1974 | 1015 |
| 16 | "Family Quarrel" | William F. Claxton | Ward Hawkins | January 8, 1975 | 1016 |
| 20 | "Child of Pain" | Victor French | John Meston | February 12, 1975 | 1020 |
| 21 | "Money Crop" | Leo Penn | Teleplay by: Ward Hawkins Story by: John Meston | February 19, 1975 | 1021 |
Question:
When arthur heinemann is the writer who is the director?
Answer:
William F. Claxton