user
Instruction
Answer the question based on the provided table.


Table
Table Title: summary
Table Content:
<table border="1" cellspacing="0">
<tr> <td rowspan="2"> athlete </td> <td rowspan="2"> event </td> <td colspan="2"> heat </td> <td colspan="2"> quarterfinal </td> <td colspan="2"> semifinal </td> <td colspan="2"> final </td> </tr>
<tr> <td> result </td> <td> rank </td> <td> result </td> <td> rank </td> <td> result </td> <td> rank </td> <td> result </td> <td> rank </td> </tr>
<tr> <td> hector cotto </td> <td>  </td> <td> 13.72 </td> <td> 6 q </td> <td> 13.73 </td> <td> 8 </td> <td colspan="4"> did not advance </td> </tr>
<tr> <td> javier culson </td> <td>  </td> <td> 49.60 </td> <td> 4 q </td> <td colspan="2"> n/a </td> <td> 49.85 </td> <td> 8 </td> <td colspan="2"> did not advance </td> </tr>
<tr> <td>  </td> <td> 1500 m </td> <td> 3:39.70 </td> <td> 10 </td> <td colspan="2"> n/a </td> <td colspan="4"> did not advance </td> </tr>
<tr> <td> felix martinez </td> <td> 400 m </td> <td> 46.46 </td> <td> 7 </td> <td colspan="2"> n/a </td> <td colspan="4"> did not advance </td> </tr>
</table>


Question
what is cotto's ranking in the quarterfinals heat?


Answer Format
The final answer should be concise and use the following format:
```json
{
    "answer": [
        "answer1",
        "answer2",
        ...
    ]
}
```
rule
["6 q"]