Table:
text: Portuguese legislative election, 1991
Opinion Polling
116 seats needed for a majority
Date_Released Polling_institute Social_Democratic Socialist Green_Communist Democratic_and_Social_Centre Lead_
September 28, 1991 Euroteste 46.0% 37.0% 9.7% 3.9% 9.0%
September 28, 1991 Euroexpansão 44.0% 33.0% 9.0% 6.0% 11.0%
September 27, 1991 Marktest 43.1% 32.8% 7.7% 4.6% 10.3%
September 27, 1991 Pluriteste 41.2% 34.7% 8.4% 8.1% 6.5%
September 20, 1991 Euroteste 45.6% 35.5% 10.0% 4.4% 10.1%
September 20, 1991 Marktest 41.9% 31.9% 7.3% 4.4% 10.0%
September 16, 1991 Pluriteste 39.2% 26.6% 6.2% 6.0% 12.6%
September 16, 1991 Euroteste 45.1% 34.5% 10.2% 5.2% 10.6%
September 14, 1991 Norma 45.0% 37.5% 11.2% 3.5% 7.5%
August 28, 1991 Euroexpansão/Marktest 35.3% 36.8% 8.7% 4.9% 1.5%
August 4, 1991 Euroteste/JN 47.5% 37.8% 12.3% 8.2% 7.7%
July 19, 1987 1987 election 50.2% 148 seats 22.2% 60 seats 12.1% 31 seats 4.4% 4 seats 28.0%

Question: What is the published date when there was 9.7% of the green communists for the 1991 Portuguese general election?

Question: What is the green communist if Euroteste/JN is the polling institute for the 1991 Portuguese general elections?