Name the number of semifinals for tt2
{'header': ['Athlete', 'Class', 'Event', 'Round 1', 'Round 2', 'Round 3', '1/8 Finals', 'Quarterfinals', 'Semifinals', 'Final/ Bronze medal contest'], 'page_title': '', 'page_id': '', 'types': ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text'], 'id': '1-18646111-13', 'section_title': '', 'caption': '', 'rows': [['Andreas Vevera', 'TT1', 'Singles', 'Cho ( KOR ) L 2-3', 'Kilger ( GER ) W 3-0', 'Fernandez ( CUB ) W 3-0', 'N/A', 'N/A', 'Lee ( KOR ) W 3-1', 'Cho ( KOR ) W 3-0'], ['Hans Ruep', 'TT2', 'Singles', 'Vella ( ITA ) W 3-1', 'Espindola ( BRA ) W 3-1', 'Boury ( FRA ) L 0-3', 'Did not advance', 'Did not advance', 'Did not advance', 'Did not advance'], ['Manfred Dollmann', 'TT3', 'Singles', 'Knaf ( BRA ) W 3-1', 'Feng ( CHN ) L 1-3', 'Did not advance', 'Did not advance', 'Did not advance', 'Did not advance', 'Did not advance'], ['Egon Kramminger', 'TT3', 'Singles', 'Egbinola ( NGR ) W 3-1', 'Geva ( ISR ) L 1-3', 'Did not advance', 'Did not advance', 'Did not advance', 'Did not advance', 'Did not advance'], ['Günther Unger', 'TT3', 'Singles', 'Rawson ( GBR ) W 3-0', 'Silva ( BRA ) L 0-3', 'Did not advance', 'Did not advance', 'Did not advance', 'Did not advance', 'Did not advance'], ['Peter Starl', 'TT4-5', 'Singles', 'Durasinovic ( SRB ) W 3-2', 'Urhaug ( NOR ) L 0-3', 'Did not advance', 'Did not advance', 'Did not advance', 'Did not advance', 'Did not advance'], ['Stanislaw Fraczyk', 'TT9-10', 'Singles', 'Cieslar ( CZE ) W 3-0', 'Powrozniak ( POL ) W 3-2', 'N/A', 'Andersson ( SWE ) L 0-3', 'Did not advance', 'Did not advance', 'Did not advance'], ['Andreas Vevera Hans Ruep', 'TT1-2', 'Team', 'N/A', 'N/A', 'N/A', 'N/A', 'Brazil W 3-1', 'France L 1-3', 'South Korea L 0-3']], 'name': 'table_18646111_13'}