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:
List of Speakers of the Parliament of Nauru
Table title:

Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Name </th><th colspan=1 rowspan=1 > Period </th><th colspan=1 rowspan=1 > notes </th></tr>
<tr> <td colspan=1 rowspan=1 > Itubwa Amram </td><td colspan=1 rowspan=1 > 1968 – Jan 1971 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Kenas Aroi </td><td colspan=1 rowspan=1 > Jan 1971 - April 1977 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > David Peter Gadaroa </td><td colspan=1 rowspan=1 > April 1977 - Aug 1981 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Ruben Kun </td><td colspan=1 rowspan=1 > Aug 1981 - Dec 1986 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Pres Nimes Ekwona </td><td colspan=1 rowspan=1 > Dec 1986 - Jan 1987 - 1988 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Derog Gioura </td><td class="highlighted"  colspan=1 rowspan=1 > ? - June 1988 - Sep 1992 - ? </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Paul D. Jeremiah </td><td colspan=1 rowspan=1 > ? - May 1993 - Nov 1995 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Maein Deireragea </td><td colspan=1 rowspan=1 > Nov 1995 - Feb 1997 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Kennan Adeang </td><td colspan=1 rowspan=1 > Feb 1997 - Dec 1998 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Ludwig Keke </td><td colspan=1 rowspan=1 > Dec 1998 - May 2000 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Ludwig Scotty </td><td colspan=1 rowspan=1 > May 2000 - May 2003 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Godfrey Thoma </td><td colspan=1 rowspan=1 > May 6, 2003 – May 7, 2003 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Fabian Ribauw </td><td colspan=1 rowspan=1 > May 29, 2003 – 2003 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Russell Kun </td><td colspan=1 rowspan=1 > 2003–2004 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Vassal Gadoengin </td><td colspan=1 rowspan=1 > October 2004 – December 15, 2004 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Valdon Dowiyogo </td><td colspan=1 rowspan=1 > December 27, 2004 – December 2007 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Riddell Akua </td><td colspan=1 rowspan=1 > December 2007 – March 18, 2008 </td><td colspan=1 rowspan=1 > resigned </td></tr>
<tr> <td colspan=1 rowspan=1 > David Adeang </td><td colspan=1 rowspan=1 > March 20, 2008 – 2008 </td><td colspan=1 rowspan=1 > removed from office </td></tr>
<tr> <td colspan=1 rowspan=1 > Riddell Akua </td><td colspan=1 rowspan=1 > April 29, 2008 – 2010 </td><td colspan=1 rowspan=1 > resigned </td></tr>
<tr> <td colspan=1 rowspan=1 > Godfrey Thoma </td><td colspan=1 rowspan=1 > May 13, 2010 – May 18, 2010 </td><td colspan=1 rowspan=1 > resigned </td></tr>
<tr> <td colspan=1 rowspan=1 > Dominic Tabuna </td><td colspan=1 rowspan=1 > June 1, 2010 – June 4, 2010 </td><td colspan=1 rowspan=1 > resigned </td></tr>
<tr> <td colspan=1 rowspan=1 > Aloysius Amwano </td><td colspan=1 rowspan=1 > July 2, 2010 – 2010 </td><td colspan=1 rowspan=1 > removed from office </td></tr>
<tr> <td colspan=1 rowspan=1 > Landon Deireragea </td><td colspan=1 rowspan=1 > July 9, 2010 – November 1, 2010 </td><td colspan=1 rowspan=1 > acting </td></tr>
<tr> <td colspan=1 rowspan=1 > Ludwig Scotty </td><td colspan=1 rowspan=1 > November 1, 2010 – April 18, 2013 </td><td colspan=1 rowspan=1 > resigned </td></tr>
<tr> <td colspan=1 rowspan=1 > Landon Deireragea </td><td colspan=1 rowspan=1 > April 18, 2013 – April 25, 2013 </td><td colspan=1 rowspan=1 > acting </td></tr>
<tr> <td colspan=1 rowspan=1 > Godfrey Thoma </td><td colspan=1 rowspan=1 > April 25, 2013 – June 11, 2013 </td><td colspan=1 rowspan=1 > lost seat after 2013 elections. </td></tr>
<tr> <td colspan=1 rowspan=1 > Ludwig Scotty </td><td colspan=1 rowspan=1 > June 11, 2013 – July 2016 </td><td colspan=1 rowspan=1 > lost seat after 2016 elections. </td></tr>
<tr> <td colspan=1 rowspan=1 > Cyril Buraman </td><td colspan=1 rowspan=1 > July 13, 2016 – Incumbent </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
Who was the Speaker of the Parliament of Nauru and how long?
Answer:
Gioura was the Speaker of the Parliament of Nauru from 1988 until 1992.