What date did the Green-Communists receive 5.7%?
{'header': ['Date Released', 'Polling institute', 'Social Democratic', 'Socialist', 'Green-Communist', 'Peoples Party', 'Left Bloc', 'Lead'], 'page_title': 'Portuguese legislative election, 2002', 'section_title': 'Opinion Polling', 'caption': '116 seats needed for a majority', 'rows': [['March 17, 2002', 'Election Results', '40.2% 105 seats', '37.8% 96 seats', '6.9% 12 seats', '8.7% 14 seats', '2.7% 3 seats', '2.4%'], ['March 17, 2002', 'Exit Poll - RTP1 Universidade Católica', '37.0% – 42.0%', '36.0% – 41.0%', '5.5% – 8.0%', '7.5% – 10.0%', '3.0% – 4.0%', '1.0%'], ['March 17, 2002', 'Exit Poll - SIC Eurosondagem', '40.1% – 43.9%', '35.5% – 39.3%', '6.2% – 8.4%', '6.2% – 8.4%', '2.0% – 3.4%', '4.6%'], ['March 17, 2002', 'Exit Poll - TVI INTERCAMPUS', '37.8% – 42.8%', '35.5% – 40.5%', '6.8% – 9.8%', '5.3% – 8.3%', '1.6% – 4.2%', '2.3%'], ['March 15, 2002', 'Marktest', '44.0%', '35.0%', '8.0%', '6.0%', '4.0%', '9.0%'], ['March 15, 2002', 'Lusófona', '43.6%', '40.9%', '5.7%', '7.1%', '2.8%', '2.7%'], ['March 15, 2002', 'Eurosondagem', '41.4%', '39.3%', '6.9%', '5.6%', '3.5%', '2.1%'], ['March 15, 2002', 'Eurequipa', '44.7%', '33.9%', '7.1%', '9.1%', '3.2%', '10.8%'], ['March 15, 2002', 'Universidade Católica', '42.2%', '37.5%', '6.9%', '6.8%', '3.6%', '4.7%'], ['March 14, 2002', 'INTERCAMPUS', '41.0%', '39.0%', '8.0%', '5.0%', '3.0%', '2.0%'], ['March 14, 2002', 'Aximage', '44.0%', '40.0%', '7.0%', '6.0%', '2.0%', '4.0%']]}