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:
Michelle Thomas
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 > Role </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=1 > 1988-1990 </td><td colspan=1 rowspan=1 > The Cosby Show </td><td colspan=1 rowspan=1 > Justine Phillips </td><td colspan=1 rowspan=1 > 8 episodes </td></tr>
<tr> <td colspan=1 rowspan=1 > 1989 </td><td colspan=1 rowspan=1 > A Man Called Hawk </td><td colspan=1 rowspan=1 > Ruthie Carver </td><td colspan=1 rowspan=1 > Episode: "Choice of Chance" </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1993-1998 </td><td class="highlighted"  colspan=1 rowspan=1 > Family Matters </td><td colspan=1 rowspan=1 > Myra Monkhouse </td><td colspan=1 rowspan=1 > 55 episodes </td></tr>
<tr> <td colspan=1 rowspan=1 > 1994 </td><td colspan=1 rowspan=1 > Thea </td><td colspan=1 rowspan=1 > Keanda </td><td colspan=1 rowspan=1 > 2 episodes </td></tr>
<tr> <td colspan=1 rowspan=1 > 1996 </td><td colspan=1 rowspan=1 > Duckman </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Voice role Episode: "Exile in Guyville" </td></tr>
<tr> <td colspan=1 rowspan=1 > 1997 </td><td colspan=1 rowspan=1 > Malcolm & Eddie </td><td colspan=1 rowspan=1 > Brooke Bellamy </td><td colspan=1 rowspan=1 > Episode: "Roofless People" </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1998 </td><td class="highlighted"  colspan=1 rowspan=1 > The Young and the Restless </td><td class="highlighted"  colspan=1 rowspan=1 > Callie Rogers Stark </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
What roles did Thomas play in 1998?
Answer:
In 1998, Thomas acted as Myra Monkhouse in the Family Matters and portrayed as Callie Rogers Stark in The Young and the Restless.