date                        race           race track                            category           lap length
0  july 21 , 1946  1st grand prix des nations  circuit des nations                      grand prix fia  km (mi) switzerland
1    may 2 , 1948    2nd grand prix de genève  circuit des nations  formula 2 fia , non - championship              km (mi)
2    may 2 , 1948  2nd grand prix des nations  circuit des nations  formula 1 fia , non - championship              km (mi)
3  july 30 , 1950    3rd grand prix de genève  circuit des nations  formula 2 fia , non - championship              km (mi)
4  july 30 , 1950  3rd grand prix des nations  circuit des nations  formula 1 fia , non - championship              km (mi)

Table as JSON:
{"date":{"0":"july 21 , 1946","1":"may 2 , 1948","2":"may 2 , 1948","3":"july 30 , 1950","4":"july 30 , 1950"},"race":{"0":"1st grand prix des nations","1":"2nd grand prix de genève","2":"2nd grand prix des nations","3":"3rd grand prix de genève","4":"3rd grand prix des nations"},"race track":{"0":"circuit des nations","1":"circuit des nations","2":"circuit des nations","3":"circuit des nations","4":"circuit des nations"},"category":{"0":"grand prix fia","1":"formula 2 fia , non - championship","2":"formula 1 fia , non - championship","3":"formula 2 fia , non - championship","4":"formula 1 fia , non - championship"},"lap length":{"0":"km (mi) switzerland","1":"km (mi)","2":"km (mi)","3":"km (mi)","4":"km (mi)"}}