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:
1990 SANFL Grand Final
Table title:
Scorecard
Table:
<table id='hittask' contenteditable='False'>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><th colspan=3 rowspan=1 > 1990 SANFL Grand Final </th><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Saturday, 7 October (2:10 pm) </td><td colspan=1 rowspan=1 > Glenelg </td><td colspan=1 rowspan=1 > def. by </td><td class="highlighted"  colspan=1 rowspan=1 > Port Adelaide </td><td class="highlighted"  colspan=1 rowspan=1 > Football Park (crowd: 50,589) </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td class="highlighted"  colspan=1 rowspan=1 > 5.2 (32) 6.7 (43) 9.11 (65) 13.15 (93) </td><td colspan=1 rowspan=1 > Q1 Q2 Q3 Final </td><td class="highlighted"  colspan=1 rowspan=1 > 4.6 (30) 10.7 (67) 13.9 (87) 16.12 (108) </td><td colspan=2 rowspan=1 > Umpires: Rick Kinnear and Mark Mackie Jack Oatey Medallist: George Fiacchi Television broadcast: Nine Network </td></tr>
<tr> <td colspan=2 rowspan=1 >  </td></tr>
<tr> <td colspan=2 rowspan=1 > Fidge 5 Murphy 3 Christie, Liptak, Jameson, Marshall, Salisbury 1 </td><td colspan=1 rowspan=1 > Goals </td><td colspan=2 rowspan=1 > 6 Hodges 3 Settre 2 Smith, Wanganeen 1 Mahney, S. Williams, M. Williams </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=2 rowspan=1 > Symonds, Jameson, Murphy </td><td colspan=1 rowspan=1 > Best </td><td colspan=2 rowspan=1 > Hutton, Ginever, Fiacchi, Hodges </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=2 rowspan=1 >  </td><td colspan=1 rowspan=1 > Injuries </td><td colspan=2 rowspan=1 > Johnston, Hodges (knee), Ginever (concussion), Mahney (hamstring) </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=2 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=6 rowspan=1 >  </td></tr>
</table>
Question:
Who won the 1990 SANFL Grand Final and how many people attended it?
Answer:
The 1990 SANFL Grand Final was attended by 50,589 spectators, and won by Port Adelaide by a margin of 15 points.