year designated grand prix                track                250 cc           350 cc                500 cc    report
0          1948     ulster grand prix                clady          maurice cann    freddie frith     enrico lorenzetti    report
1          1947      swiss grand prix           bremgarten       bruno francisci  fergus anderson         omobono tenni    report
2   1946 - 1938              not held             not held              not held         not held              not held  not held
3          1937      swiss grand prix           bremgarten         omobono tenni   jimmie guthrie        jimmie guthrie    report
4          1936     german grand prix          sachsenring  henry tyrell - smith    freddie frith        jimmie guthrie    report
5          1935     ulster grand prix                clady           arthur geiß      wal handley        jimmie guthrie    report
6          1934              dutch tt                assen      walfried winkler   jimmie simpson          pol demeuter    report
7          1933    swedish grand prix              saxtorp        charlie dodson   jimmie simpson          gunnar kalén    report
8          1932    nations grand prix             littorio        riccardo brusi    louis jeannin         piero taruffi    report
9          1931     french grand prix            montlhéry         graham walker       ernie nott            percy hunt    report
10         1930    belgian grand prix  spa - francorchamps          syd crabtree       ernie nott  henry tyrell - smith    report
11         1929    spanish grand prix           granollers         frank longman    leo davenport            percy hunt    report
12         1928      swiss grand prix               meyrin           cecil ashby      wal handley           wal handley    report
13         1927     german grand prix          nürburgring           cecil ashby   jimmie simpson         graham walker    report
14         1926    belgian grand prix  spa - francorchamps           jock porter    frank longman        jimmie simpson    report
15         1925    nations grand prix                monza           jock porter   tazio nuvolari         mario revelli    report
16         1924    nations grand prix                monza     maurice van geert   jimmie simpson        guido mentasti    report

Table as JSON:
{"year":{"0":"1948","1":"1947","2":"1946 - 1938","3":"1937","4":"1936","5":"1935","6":"1934","7":"1933","8":"1932","9":"1931","10":"1930","11":"1929","12":"1928","13":"1927","14":"1926","15":"1925","16":"1924"},"designated grand prix":{"0":"ulster grand prix","1":"swiss grand prix","2":"not held","3":"swiss grand prix","4":"german grand prix","5":"ulster grand prix","6":"dutch tt","7":"swedish grand prix","8":"nations grand prix","9":"french grand prix","10":"belgian grand prix","11":"spanish grand prix","12":"swiss grand prix","13":"german grand prix","14":"belgian grand prix","15":"nations grand prix","16":"nations grand prix"},"track":{"0":"clady","1":"bremgarten","2":"not held","3":"bremgarten","4":"sachsenring","5":"clady","6":"assen","7":"saxtorp","8":"littorio","9":"montlhéry","10":"spa - francorchamps","11":"granollers","12":"meyrin","13":"nürburgring","14":"spa - francorchamps","15":"monza","16":"monza"},"250 cc":{"0":"maurice cann","1":"bruno francisci","2":"not held","3":"omobono tenni","4":"henry tyrell - smith","5":"arthur geiß","6":"walfried winkler","7":"charlie dodson","8":"riccardo brusi","9":"graham walker","10":"syd crabtree","11":"frank longman","12":"cecil ashby","13":"cecil ashby","14":"jock porter","15":"jock porter","16":"maurice van geert"},"350 cc":{"0":"freddie frith","1":"fergus anderson","2":"not held","3":"jimmie guthrie","4":"freddie frith","5":"wal handley","6":"jimmie simpson","7":"jimmie simpson","8":"louis jeannin","9":"ernie nott","10":"ernie nott","11":"leo davenport","12":"wal handley","13":"jimmie simpson","14":"frank longman","15":"tazio nuvolari","16":"jimmie simpson"},"500 cc":{"0":"enrico lorenzetti","1":"omobono tenni","2":"not held","3":"jimmie guthrie","4":"jimmie guthrie","5":"jimmie guthrie","6":"pol demeuter","7":"gunnar kalén","8":"piero taruffi","9":"percy hunt","10":"henry tyrell - smith","11":"percy hunt","12":"wal handley","13":"graham walker","14":"jimmie simpson","15":"mario revelli","16":"guido mentasti"},"report":{"0":"report","1":"report","2":"not held","3":"report","4":"report","5":"report","6":"report","7":"report","8":"report","9":"report","10":"report","11":"report","12":"report","13":"report","14":"report","15":"report","16":"report"}}