Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Athletics at the 1956 Summer Olympics – Men's pole vault
Table title:
Final classification
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > RANK </th><th colspan=1 rowspan=1 > NAME ATHLETE </th><th colspan=1 rowspan=1 > HEIGHT </th></tr>
<tr> <td colspan=1 rowspan=1 > - </td><td class="highlighted"  colspan=1 rowspan=1 > Bob Richards (USA) </td><td class="highlighted"  colspan=1 rowspan=1 > 4.56 m </td></tr>
<tr> <td colspan=1 rowspan=1 > - </td><td class="highlighted"  colspan=1 rowspan=1 > Bob Gutowski (USA) </td><td class="highlighted"  colspan=1 rowspan=1 > 4.53 m </td></tr>
<tr> <td colspan=1 rowspan=1 > - </td><td class="highlighted"  colspan=1 rowspan=1 > Georgios Roubanis (GRE) </td><td class="highlighted"  colspan=1 rowspan=1 > 4.50 m </td></tr>
<tr> <td colspan=1 rowspan=1 > 4. </td><td class="highlighted"  colspan=1 rowspan=1 > George Mattos (USA) </td><td class="highlighted"  colspan=1 rowspan=1 > 4.35 m </td></tr>
<tr> <td colspan=1 rowspan=1 > 5. </td><td colspan=1 rowspan=1 > Ragnar Lundberg (SWE) </td><td colspan=1 rowspan=1 > 4.25 m </td></tr>
<tr> <td colspan=1 rowspan=1 > 6. </td><td colspan=1 rowspan=1 > Zenon Wazny (POL) </td><td colspan=1 rowspan=1 > 4.25 m </td></tr>
<tr> <td colspan=1 rowspan=1 > 7. </td><td colspan=1 rowspan=1 > Eeles Landström (FIN) </td><td colspan=1 rowspan=1 > 4.25 m </td></tr>
<tr> <td colspan=1 rowspan=1 > 8. </td><td colspan=1 rowspan=1 > Manfred Preußger (EUA) </td><td colspan=1 rowspan=1 > 4.25 m </td></tr>
<tr> <td colspan=1 rowspan=1 > 9. </td><td colspan=1 rowspan=1 > Vladimir Bulatov (URS) </td><td colspan=1 rowspan=1 > 4.15 m </td></tr>
<tr> <td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > Giulio Chiesa (ITA) </td><td colspan=1 rowspan=1 > 4.15 m </td></tr>
<tr> <td colspan=1 rowspan=1 > 11. </td><td colspan=1 rowspan=1 > Anatoly Petrov (URS) </td><td colspan=1 rowspan=1 > 4.15 m </td></tr>
<tr> <td colspan=1 rowspan=1 > 12. </td><td colspan=1 rowspan=1 > Zbigniew Janiszewski (POL) </td><td colspan=1 rowspan=1 > 4.15 m </td></tr>
<tr> <td colspan=1 rowspan=1 > 13. </td><td colspan=1 rowspan=1 > Vitaliy Chernobai (URS) </td><td colspan=1 rowspan=1 > 4.00 m </td></tr>
<tr> <td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > Matti Sutinen (FIN) </td><td colspan=1 rowspan=1 > DNQ </td></tr>
<tr> <td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > Peter Denton (AUS) </td><td colspan=1 rowspan=1 > DNQ </td></tr>
<tr> <td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > Rolando Cruz (PUR) </td><td colspan=1 rowspan=1 > DNQ </td></tr>
<tr> <td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > Bruce Peever (AUS) </td><td colspan=1 rowspan=1 > DNQ </td></tr>
<tr> <td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > Victor Sillon (FRA) </td><td colspan=1 rowspan=1 > DNQ </td></tr>
<tr> <td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > Allah Ditta (PAK) </td><td colspan=1 rowspan=1 > DNQ </td></tr>
</table>
Question:
Which athletes were left by the 4:35?
Answer:
By 4.35, there were only four athletes left; the three Americans George Mattos, Bob Gutowski and Richards.