Teacher:You are given the conttent of a table in the input (row by row). Generate an unambiguous question based on the information present in the table, such that: 1) It's answer is unique and is in the given table, 2) Its answer is a contiguous text span from the table. Avoid creating questions that can be answered correctly without reading/understanding the table
Teacher: Now, understand the problem? Solve this instance: Table: ['No.', 'Date', 'Location', 'Surface', 'Opponent in final', 'Score']. ['1.', '28 August 2000', 'Spoleto, Italy $10,000', 'Clay', 'Maret Ani', '6-2 7-6(7)']. ['2.', '9 April 2001', 'San Luis Potosi, Mexico $25,000', 'Clay', 'Martina Muller', '6-4 7-5']. ['3.', '16 April 2001', 'Coatzacoalcos, Mexico $25,000', 'Hard', 'Gabriela Volekova', '6-1 6-3']. ['4.', '15 October 2002', 'Sedona, USA $25,000', 'Hard', 'Brie Rippner', '6-3 4-6 6-3']. ['5.', '5 November 2002', 'Pittsburgh, USA $50,000', 'Hard', 'Maria Sharapova', '7-6(4) 6-2']. ['6.', '14 April 2003', 'San Luis Potosi, Mexico $25,000', 'Clay', 'Maria Vanina Garcia Sokol', '6-0 6-4']. ['7.', '27 April 2009', 'Cagnes-sur-Mer, France $100,000', 'Clay', 'Zuzana Ondraskova', '6-1-6-2']. ['8.', '1 June 2009', 'Nottingham, England $50,000', 'Grass', 'Stefanie Vogele', '6-2 4-6 6-1']
Student:
what are the surfaces?