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 | Air Date | Rating | Share | 18–49 (Rating/Share) | Viewers (m) | Weekly Rank |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1.0 | "A Love of a Lifetime" | September 24, 2007 | 5.8 | 9.0 | 3.5/9 | 9.16 | 43.0 |
| 2.0 | "Friendly Skies" | October 1, 2007 | 5.3 | 9.0 | 3.2/8 | 8.23 | 50.0 |
| 3.0 | "Game Three" | October 8, 2007 | 4.4 | 7.0 | 2.9/7 | 6.94 | 61.0 |
| 4.0 | "The Year of the Rabbit" | October 15, 2007 | 4.3 | 7.0 | 2.7/7 | 6.75 | 67.0 |
| 5.0 | "The Legend of Dylan McCleen" | October 22, 2007 | 3.8 | 6.0 | 2.4/6 | 6.06 | 72.0 |
| 6.0 | "Keepers" | October 29, 2007 | 3.7 | 6.0 | 2.2/6 | 5.75 | 71.0 |
| 7.0 | "Double Down" | November 5, 2007 | 3.4 | 6.0 | 2.1/5 | 5.13 | 80.0 |
| 8.0 | "Winterland" | November 12, 2007 | 4.0 | 7.0 | 2.4/6 | 6.09 | 70.0 |
| 9.0 | "Emily" | November 19, 2007 | 3.7 | 6.0 | 2.2/6 | 5.61 | 66.0 |
| 10.0 | "Blowback" | November 26, 2007 | 3.7 | 6.0 | 2.4/6 | 6.05 | 68.0 |
| 11.0 | "Home By Another Way" | December 10, 2007 | 3.5 | 6.0 | 1.7/5 | 5.28 | 62.0 |
| 12.0 | "The Hanged Man" | December 17, 2007 | 3.0 | 5.0 | 1.5/4 | 4.24 | 65.0 |
Question:
What is the episode where 18-49 has a rating/share of 3.5/9
Answer:
"A Love of a Lifetime"