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:
William & Mary Tribe
Table title:
Team
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Association </th><th colspan=1 rowspan=1 > Division </th><th colspan=1 rowspan=1 > Sport </th><th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Opponent/ runner-up </th><th colspan=1 rowspan=1 > Score </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=2 > NCAA </td><td colspan=1 rowspan=2 > University Division </td><td class="highlighted"  colspan=1 rowspan=2 > Men's Tennis (2) </td><td class="highlighted"  colspan=1 rowspan=1 > 1947 </td><td class="highlighted"  colspan=1 rowspan=1 > Rice </td><td class="highlighted"  colspan=1 rowspan=1 > 10–4 (+6) </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1948 </td><td class="highlighted"  colspan=1 rowspan=1 > San Francisco </td><td class="highlighted"  colspan=1 rowspan=1 > 6–5 (+1) </td></tr>
</table>
Question:
When did William & Mary Tribe compete in two NCAA championships, and what were the results?
Answer:
The William & Mary Tribe team won two NCAA championships in 1947 (10–4 vs. Rice) and 1948 (6–5 vs. San Francisco).