Table: european motorcycle grand prix
[['year', 'designated grand prix', 'track', '250 cc', '350 cc', '500 cc', 'report'], ['1948', 'ulster grand prix', 'clady', 'maurice cann', 'freddie frith', 'enrico lorenzetti', 'report'], ['1947', 'swiss grand prix', 'bremgarten', 'bruno francisci', 'fergus anderson', 'omobono tenni', 'report'], ['1946 - 1938', 'not held', 'not held', 'not held', 'not held', 'not held', 'not held'], ['1937', 'swiss grand prix', 'bremgarten', 'omobono tenni', 'jimmie guthrie', 'jimmie guthrie', 'report'], ['1936', 'german grand prix', 'sachsenring', 'henry tyrell - smith', 'freddie frith', 'jimmie guthrie', 'report'], ['1935', 'ulster grand prix', 'clady', 'arthur geiß', 'wal handley', 'jimmie guthrie', 'report'], ['1934', 'dutch tt', 'assen', 'walfried winkler', 'jimmie simpson', 'pol demeuter', 'report'], ['1933', 'swedish grand prix', 'saxtorp', 'charlie dodson', 'jimmie simpson', 'gunnar kalén', 'report'], ['1932', 'nations grand prix', 'littorio', 'riccardo brusi', 'louis jeannin', 'piero taruffi', 'report'], ['1931', 'french grand prix', 'montlhéry', 'graham walker', 'ernie nott', 'percy hunt', 'report'], ['1930', 'belgian grand prix', 'spa - francorchamps', 'syd crabtree', 'ernie nott', 'henry tyrell - smith', 'report'], ['1929', 'spanish grand prix', 'granollers', 'frank longman', 'leo davenport', 'percy hunt', 'report'], ['1928', 'swiss grand prix', 'meyrin', 'cecil ashby', 'wal handley', 'wal handley', 'report'], ['1927', 'german grand prix', 'nürburgring', 'cecil ashby', 'jimmie simpson', 'graham walker', 'report'], ['1926', 'belgian grand prix', 'spa - francorchamps', 'jock porter', 'frank longman', 'jimmie simpson', 'report'], ['1925', 'nations grand prix', 'monza', 'jock porter', 'tazio nuvolari', 'mario revelli', 'report'], ['1924', 'nations grand prix', 'monza', 'maurice van geert', 'jimmie simpson', 'guido mentasti', 'report']]
Statement: Monza was the Track in 2 seperate Year
Statement: the Nation Grand Prix was Held at the Monza Track for 2 out of 3 Year
Statement: Freddie Frith won the 350cc 2 time , each time on a different Track
Statement: Cecil Ashby won the 250cc 2 time , each time on a different Track
Statement: Jock Porter won the 250cc 2 time , each time on a different Track