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:
Greg James
Table title:
Filmography
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Title </th><th colspan=1 rowspan=1 > Channel </th><th colspan=1 rowspan=1 > Role </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=2 > 2009 </td><td colspan=1 rowspan=1 > Sun, Sex and Holiday Madness </td><td class="highlighted"  colspan=1 rowspan=6 > BBC Three </td><td colspan=1 rowspan=2 > Presenter </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Young, Jobless and Living at Home </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=2 > 2012 </td><td colspan=1 rowspan=1 > Unzipped </td><td class="highlighted"  colspan=1 rowspan=5 > Co-presenter </td><td colspan=1 rowspan=1 > 2 series </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 50 Greatest London 2012 Olympics Moments </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=2 > 2013 </td><td colspan=1 rowspan=1 > How to Win Eurovision </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Staying in with Greg and Russell </td><td colspan=1 rowspan=1 > 1 series </td></tr>
<tr> <td colspan=1 rowspan=1 > 2014 </td><td colspan=1 rowspan=1 > The Invictus Games: Closing Ceremony </td><td colspan=1 rowspan=1 > BBC Two </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 2015 </td><td colspan=1 rowspan=1 > I Survived a Zombie Apocalypse </td><td colspan=1 rowspan=1 > BBC Three </td><td colspan=1 rowspan=1 > Presenter </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 2016— </td><td colspan=1 rowspan=1 > The One Show </td><td colspan=1 rowspan=1 > BBC One </td><td colspan=1 rowspan=1 > Guest co-presenter </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 2016–2017 </td><td colspan=1 rowspan=1 > BT Sport Cricket </td><td colspan=1 rowspan=1 > BT Sport </td><td colspan=1 rowspan=1 > Presenter </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=3 > 2016 </td><td colspan=1 rowspan=1 > Sport Relief </td><td colspan=1 rowspan=3 > BBC One </td><td colspan=1 rowspan=5 > Co-presenter </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Children in Need Rocks for Terry </td><td colspan=1 rowspan=1 > One-off special </td></tr>
<tr> <td colspan=1 rowspan=1 > Children in Need </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 2017 </td><td colspan=1 rowspan=1 > The Playlist </td><td colspan=1 rowspan=1 > CBBC </td><td colspan=1 rowspan=1 > Series 1 (As Of 2017) </td></tr>
<tr> <td colspan=1 rowspan=1 > 2017— </td><td colspan=1 rowspan=1 > Sounds Like Friday Night </td><td colspan=1 rowspan=1 > BBC One </td><td colspan=1 rowspan=1 > 2 series </td></tr>
</table>
Question:
Which show about the Olympics did James present in 2012 and on which BBC channel did it appear?
Answer:
In 2012, James presented 50 Greatest London 2012 Olympics Moments on BBC Three.