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 | No. in season | Title | Directed by | Written by | Original air date | U.S. viewers (millions) |
| --- | --- | --- | --- | --- | --- | --- |
| 62.0 | 1.0 | " A Change Is Gonna Come " | Rob Corn | Shonda Rhimes | September27,2007 | 20.93 |
| 63.0 | 2.0 | " Love/Addiction " | James Frawley | Debora Cahn | October4,2007 | 18.51 |
| 64.0 | 3.0 | " Let the Truth Sting " | Dan Minahan | Mark Wilding | October11,2007 | 19.04 |
| 65.0 | 4.0 | " The Heart of the Matter " | Randy Zisk | Allan Heinberg | October18,2007 | 18.04 |
| 66.0 | 5.0 | " Haunt You Every Day " | Bethany Rooney | Krista Vernoff | October25,2007 | 18.17 |
| 67.0 | 6.0 | " Kung Fu Fighting " | Tom Verica | Stacy McKee | November1,2007 | 19.31 |
| 68.0 | 7.0 | " Physical Attraction, Chemical Reaction " | Jeff Melman | Tony Phelan & Joan Rater | November8,2007 | 19.50 |
| 69.0 | 8.0 | " Forever Young " | Rob Corn | Mark Wilding | November15,2007 | 19.61 |
| 70.0 | 9.0 | " Crash Into Me (Part 1) " | Michael Grossman | Shonda Rhimes & Krista Vernoff | November22,2007 | 14.11 |
| 71.0 | 10.0 | " Crash Into Me (Part 2) " | Jessica Yu | Shonda Rhimes & Krista Vernoff | December6,2007 | 17.78 |
| 72.0 | 11.0 | " Lay Your Hands on Me " | John Terlesky | Allan Heinberg | January10,2008 | 17.68 |
| 73.0 | 12.0 | " Where the Wild Things Are " | Rob Corn | Zoanne Clack | April24,2008 | 16.37 |
| 74.0 | 13.0 | " Piece of My Heart " | Mark Tinker | Stacy McKee | May1,2008 | 15.31 |
| 75.0 | 14.0 | " The Becoming " | Julie Anne Robinson | Tony Phelan & Joan Rater | May8,2008 | 16.03 |
| 76.0 | 15.0 | " Losing My Mind " | James Frawley | Debora Cahn | May15,2008 | 15.55 |
| 77.0 | 16.0 | " Freedom (Part 1) " | Rob Corn | Shonda Rhimes | May22,2008 | 18.09 |
Question:
What is the title of the episode directed by Mark Tinker?
Answer:
" Piece of My Heart "