Table:
text: Twenty-eighth Amendment of the Constitution of Ireland
Opinion polls
Opinion polls
Date_of_opinion_poll Conductor Sample_size For_ Against Undecided
27 September 2009 Sunday Independent/Quantum Research 1000 68% 17% 15%
26 September 2009 Red C/Sunday Business Post 1000 55% 27% 18%
25 September 2009 TNS/mrbi/Irish Times 1000 48% 33% 19%
18 September 2009 Millward Brown/Lansdowne 1000 53% 26% 21%
12 September 2009 Quantum Research/Sunday Independent 1000 63% 15% 22%
12 September 2009 Red C/Post 1000 52% 25% 23%
4 September 2009 TNS/mrbi 1000 46% 29% 25%
28 May 2009 TNS/mrbi 2000 54% 28% 18%
13 May 2009 TNS/mrbi 2000 52% 29% 19%
25 April 2009 Quantum Research 500 54% 24% 22%
28 January 2009 Red C/Post 1001 58% 28% 14%
23 January 2009 Lansdowne 1000 58% 29% 12%

Question: How many polls conducted on different dates show an undecided percentage of 25% among opinion polls on the twenty-eighth amendment to the Constitution of Ireland?

Question: When was the Quantum Research Poll of Opinion Polls on the Twenty-eighth Amendment to the Irish Constitution conducted?

Question: Who conducted the opinion polls with a sample size of 2000 showing 18% undecided under the twenty-eighth amendment to the Irish constitution?