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:
Anna Goryachova
Table title:
Repertoire (partial)
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Role </th><th colspan=1 rowspan=1 > Title </th><th colspan=1 rowspan=1 > Composer </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Adalgisa </td><td class="highlighted"  colspan=1 rowspan=1 > Norma </td><td class="highlighted"  colspan=1 rowspan=1 > Bellini </td></tr>
<tr> <td colspan=1 rowspan=1 > Carmen </td><td colspan=1 rowspan=1 > Carmen </td><td colspan=1 rowspan=1 > Bizet </td></tr>
<tr> <td colspan=1 rowspan=1 > Masha </td><td colspan=1 rowspan=1 > Three Sisters </td><td colspan=1 rowspan=1 > Péter Eötvös </td></tr>
<tr> <td colspan=1 rowspan=1 > Ruggiero </td><td colspan=1 rowspan=1 > Alcina </td><td colspan=1 rowspan=1 > Handel </td></tr>
<tr> <td colspan=1 rowspan=1 > Eustazio </td><td colspan=1 rowspan=1 > Rinaldo </td><td colspan=1 rowspan=1 > Handel </td></tr>
<tr> <td colspan=1 rowspan=1 > Alcina </td><td colspan=1 rowspan=1 > Orlando paladino </td><td colspan=1 rowspan=1 > Haydn </td></tr>
<tr> <td colspan=1 rowspan=1 > Sesto </td><td colspan=1 rowspan=1 > La clemenza di Tito </td><td colspan=1 rowspan=1 > Mozart </td></tr>
<tr> <td colspan=1 rowspan=1 > Dorabella </td><td colspan=1 rowspan=1 > Così fan tutte </td><td colspan=1 rowspan=1 > Mozart </td></tr>
<tr> <td colspan=1 rowspan=1 > Donna Elvira </td><td colspan=1 rowspan=1 > Don Giovanni </td><td colspan=1 rowspan=1 > Mozart </td></tr>
<tr> <td colspan=1 rowspan=1 > Zerlina </td><td colspan=1 rowspan=1 > Don Giovanni </td><td colspan=1 rowspan=1 > Mozart </td></tr>
<tr> <td colspan=1 rowspan=1 > Maria </td><td colspan=1 rowspan=1 > Boris Godunov </td><td colspan=1 rowspan=1 > Mussorgsky </td></tr>
<tr> <td colspan=1 rowspan=1 > Rosina </td><td colspan=1 rowspan=1 > Il barbiere di Siviglia </td><td colspan=1 rowspan=1 > Rossini </td></tr>
<tr> <td colspan=1 rowspan=1 > Angelina </td><td colspan=1 rowspan=1 > La Cenerentola </td><td colspan=1 rowspan=1 > Rossini </td></tr>
<tr> <td colspan=1 rowspan=1 > Isabella </td><td colspan=1 rowspan=1 > L'italiana in Algeri </td><td colspan=1 rowspan=1 > Rossini </td></tr>
<tr> <td colspan=1 rowspan=1 > Edoardo </td><td colspan=1 rowspan=1 > Matilde di Shabran </td><td colspan=1 rowspan=1 > Rossini </td></tr>
<tr> <td colspan=1 rowspan=1 > Melibea </td><td colspan=1 rowspan=1 > Il viaggio a Reims </td><td colspan=1 rowspan=1 > Rossini </td></tr>
<tr> <td colspan=1 rowspan=1 > Olga </td><td colspan=1 rowspan=1 > Evgeniy Onegin </td><td colspan=1 rowspan=1 > Tchaikovsky </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Polina </td><td class="highlighted"  colspan=1 rowspan=1 > The Queen of Spades </td><td class="highlighted"  colspan=1 rowspan=1 > Tchaikovsky </td></tr>
<tr> <td colspan=1 rowspan=1 > Juditha </td><td colspan=1 rowspan=1 > Juditha triumphans </td><td colspan=1 rowspan=1 > Vivaldi </td></tr>
<tr> <td colspan=1 rowspan=1 > Magdalena </td><td colspan=1 rowspan=1 > Die Meistersinger von Nürnberg </td><td colspan=1 rowspan=1 > Richard Wagner </td></tr>
</table>
Question:
What roles has Anna Goryachova sang in Tchaikovsky operas?
Answer:
Anna Goryachova sang Olga in Tchaikovsky's Evgeniy Onegin and sang Polina in Tchaikovsky's The Queen of Spades.