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 | Nation | Competitors | Time | Notes |
| --- | --- | --- | --- | --- | --- |
| 1 | 2 | United States | Kelly Willie, Derrick Brew, Andrew Rock, Darold Williamson | 2:59.30 | Q |
| 2 | 2 | Nigeria | James Godday, Musa Audu, Saul Weigopwa, Enefiok Udo-Obong | 3:01.60 | Q, SB |
| 3 | 2 | Bahamas | Andrae Williams, Dennis Darling, Nathaniel McKinney, Christopher Brown | 3:01.74 | Q, SB |
| 4 | 1 | Great Britain | Timothy Benjamin, Sean Baldock, Malachi Davis, Matthew Elias | 3:02.40 | Q, SB |
| 5 | 1 | Japan | Yuki Yamaguchi, Jun Osakada, Tomohiro Ito, Mitsuhiro Sato | 3:02.71 | Q |
| 6 | 1 | Germany | Ingo Schultz, Kamghe Gaba, Ruwen Faller, Bastian Swillims | 3:02.77 | Q |
| 7 | 1 | Australia | John Steffensen, Clinton Hill, Patrick Dwyer, Mark Ormrod | 3:03.06 | q |
| 8 | 1 | Botswana | Oganeditse Moseki, Johnson Kubisa, California Molefe, Kagiso Kilego | 3:03.32 | q, SB |
| 9 | 2 | Russia | Aleksandr Larin, Andrey Rudnitskiy, Oleg Mishukov, Ruslan Mashchenko | 3:03.35 |  |
| 10 | 2 | Poland | Piotr Rysiukiewicz, Piotr Klimczak, Marcin Marciniszyn, Marek Plawgo | 3:03.69 |  |
| 11 | 2 | Ukraine | Volodymyr Demchenko, Yevgeniy Zyukov, Myhaylo Knysh, Andriy Tverdostup | 3:04.01 |  |
| 12 | 1 | Greece | Stilianos Dimotsios, Anastasios Gousis, Panagiotis Sarris, Periklis Iakovakis | 3:04.27 | SB |
| 13 | 1 | France | Ahmed Douhou, Ibrahima Wade, Abderrahim El Haouzy, Leslie Djhone | 3:04.39 |  |
| 14 | 2 | Spain | Eduardo Ivan Rodriguez, David Canal, Luis Flores, Antonio Manuel Reina | 3:05.03 | SB |
|  | 2 | South Africa | Marcus la Grange, Hendrick Mokganyetsi, Ockert Cilliers, Arnaud Malherbe | DNF |  |
|  | 1 | Jamaica | Michael Campbell, Michael Blackwood, Jermaine Gonzales, Davian Clarke | DSQ |  |
Question:
how many athletes only took 3:02 minutes to complete the heat?
Answer:
12