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:
Nagaland (Lok Sabha constituency)
Table title:
Members of Parliament
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=2 rowspan=1 > Election </th><th colspan=1 rowspan=1 > Member </th><th colspan=1 rowspan=1 > Party </th></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 1967 </td><td colspan=1 rowspan=1 > S. C. Jamir </td><td colspan=1 rowspan=1 > Nagaland Nationalist Organisation </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 1971 </td><td colspan=1 rowspan=1 > A. Kevichusa </td><td colspan=1 rowspan=1 > United Front of Nagaland </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 1977 </td><td colspan=1 rowspan=1 > Rano M. Shaiza </td><td colspan=1 rowspan=1 > United Democratic Front </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 1980 </td><td colspan=1 rowspan=2 > Chingwang Konyak </td><td colspan=1 rowspan=1 > Independent </td></tr>
<tr> <td colspan=1 rowspan=2 >  </td><td colspan=1 rowspan=1 > 1984 </td><td colspan=1 rowspan=2 > Indian National Congress </td></tr>
<tr> <td colspan=1 rowspan=1 > 1989 </td><td colspan=1 rowspan=1 > Shikiho Sema </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td class="highlighted"  colspan=1 rowspan=1 > 1991 </td><td class="highlighted"  colspan=1 rowspan=2 > Imchalemba </td><td class="highlighted"  colspan=1 rowspan=1 > Nagaland Peoples Council </td></tr>
<tr> <td colspan=1 rowspan=3 >  </td><td class="highlighted"  colspan=1 rowspan=1 > 1996 </td><td class="highlighted"  colspan=1 rowspan=3 > Indian National Congress </td></tr>
<tr> <td colspan=1 rowspan=1 > 1998 </td><td colspan=1 rowspan=2 > K. Asungba Sangtam </td></tr>
<tr> <td colspan=1 rowspan=1 > 1999 </td></tr>
<tr> <td colspan=1 rowspan=3 >  </td><td colspan=1 rowspan=1 > 2004 </td><td colspan=1 rowspan=1 > W. Wangyuh Konyak </td><td colspan=1 rowspan=3 > Nagaland People's Front </td></tr>
<tr> <td colspan=1 rowspan=1 > 2009 </td><td colspan=1 rowspan=1 > C. M. Chang </td></tr>
<tr> <td colspan=1 rowspan=1 > 2014 </td><td colspan=1 rowspan=1 > Neiphiu Rio </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 2018 (By Poll) </td><td colspan=1 rowspan=1 > Tokheho Yepthomi </td><td colspan=1 rowspan=1 > Nationalist Democratic Progressive Party </td></tr>
</table>
Question:
Who was the MP of Nagaland constituency from 1991-1998?
Answer:
From 1991–98, Imchalemba was the MP of Nagaland constituency firstly as a member of the Nagaland Peoples Council and then as a member of the INC..