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:
Swimming at the 2012 Summer Olympics – Men's 100 metre butterfly
Table title:
Final
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Rank </th><th colspan=1 rowspan=1 > Lane </th><th colspan=1 rowspan=1 > Name </th><th colspan=1 rowspan=1 > Nationality </th><th colspan=1 rowspan=1 > Time </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 > Michael Phelps </td><td colspan=1 rowspan=1 > United States </td><td colspan=1 rowspan=1 > 51.21 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=2 >  </td><td colspan=1 rowspan=1 > 5 </td><td colspan=1 rowspan=1 > Chad le Clos </td><td colspan=1 rowspan=1 > South Africa </td><td colspan=1 rowspan=2 > 51.44 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 8 </td><td colspan=1 rowspan=1 > Yevgeny Korotyshkin </td><td colspan=1 rowspan=1 > Russia </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=2 > 4 </td><td colspan=1 rowspan=1 > 6 </td><td class="highlighted"  colspan=1 rowspan=1 > Milorad Čavić </td><td class="highlighted"  colspan=1 rowspan=1 > Serbia </td><td class="highlighted"  colspan=1 rowspan=2 > 51.81 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 7 </td><td class="highlighted"  colspan=1 rowspan=1 > Steffen Deibler </td><td class="highlighted"  colspan=1 rowspan=1 > Germany </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 6 </td><td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > Joeri Verlinden </td><td colspan=1 rowspan=1 > Netherlands </td><td colspan=1 rowspan=1 > 51.82 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 7 </td><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > Tyler McGill </td><td colspan=1 rowspan=1 > United States </td><td colspan=1 rowspan=1 > 51.88 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 8 </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > Konrad Czerniak </td><td colspan=1 rowspan=1 > Poland </td><td colspan=1 rowspan=1 > 52.05 </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
What is the full name and nationality of the two swimmers that tied for 4th place in the Men's 100m butterfly at the 2012 Summer Olympics.
Answer:
Serbia's Milorad Čavić and Germany's Steffen Deibler tied for fourth place.