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:
| Rank | Heat | Name | Nationality | Result |
| --- | --- | --- | --- | --- |
| 1.0 | 1.0 | Sheena Tosta | United States | 54.07 |
| 2.0 | 2.0 | Melaine Walker | Jamaica | 54.2 |
| 3.0 | 1.0 | Tasha Danvers | Great Britain | 54.31 |
| 4.0 | 1.0 | Anna Jesień | Poland | 54.36 |
| 5.0 | 1.0 | Ekaterina Bikert | Russia | 54.38 |
| 6.0 | 2.0 | Anastasiya Rabchenyuk | Ukraine | 54.6 |
| 7.0 | 1.0 | Nickiesha Wilson | Jamaica | 54.67 |
| 8.0 | 1.0 | Anastasiya Ott | Russia | 54.74 |
| 9.0 | 2.0 | Tiffany Ross-Williams | United States | 54.99 |
| 10.0 | 2.0 | Zuzana Hejnová | Czech Republic | 55.17 |
| 11.0 | 2.0 | Aïssata Soulama | Burkina Faso | 55.69 |
| 12.0 | 2.0 | Irina Obedina | Russia | 55.69 |
| 13.0 | 2.0 | Queen Harrison | United States | 55.88 |
| 14.0 | 2.0 | Tsvetelina Kirilova | Bulgaria | 55.97 |
| 15.0 | 1.0 | Satomi Kubokura | Japan | 56.69 |
| 16.0 | 1.0 | Angela Morosanu | Romania | 57.67 |
Question:
Which Nationality has a Heat smaller than 2, and a Rank of 15?
Answer:
Japan