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:
Rihanna (book)
Table title:
Release history
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Region </th><th colspan=1 rowspan=1 > Date </th><th colspan=1 rowspan=1 > Format </th><th colspan=1 rowspan=1 > Publisher </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > United States </td><td class="highlighted"  colspan=1 rowspan=1 > October 15, 2010 </td><td class="highlighted"  colspan=1 rowspan=1 > Hardcover </td><td class="highlighted"  colspan=1 rowspan=7 > Rizzoli Publications </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > United States </td><td class="highlighted"  colspan=1 rowspan=3 > October 19, 2010 </td><td class="highlighted"  colspan=1 rowspan=3 > Paperback </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Germany </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > France </td></tr>
<tr> <td colspan=1 rowspan=1 > United Kingdom </td><td colspan=1 rowspan=1 > October 20, 2010 </td><td colspan=1 rowspan=1 > Hardcover paperback </td></tr>
<tr> <td colspan=1 rowspan=1 > United States </td><td colspan=1 rowspan=1 > October 26, 2010 </td><td colspan=1 rowspan=1 > Hardcover </td></tr>
<tr> <td colspan=1 rowspan=1 > Portugal </td><td colspan=1 rowspan=1 > February 2012 </td><td colspan=1 rowspan=1 > Paperback </td></tr>
</table>
Question:
When was the Rihanna book released and under which publisher in the US, Germany and France?
Answer:
Rihanna (book) was released on October 15, 2010 in the United States under Rizzoli Publications, on hardcover format. Four days later, the paperback format was issued in the United States, Germany, and France.