year   track           250 cc           500 cc  report
0  1990  rijeka    carlos cardãs     wayne rainey  report
1  1989  rijeka        sito pons   kevin schwantz  report
2  1988  rijeka        sito pons    wayne gardner  report
3  1987  rijeka    carlos lavado    wayne gardner  report
4  1986  rijeka        sito pons     eddie lawson  report
5  1985  rijeka  freddie spencer     eddie lawson  report
6  1984  rijeka   manfred herweh  freddie spencer  report

Table as JSON:
{"year":{"0":1990,"1":1989,"2":1988,"3":1987,"4":1986,"5":1985,"6":1984},"track":{"0":"rijeka","1":"rijeka","2":"rijeka","3":"rijeka","4":"rijeka","5":"rijeka","6":"rijeka"},"250 cc":{"0":"carlos cardãs","1":"sito pons","2":"sito pons","3":"carlos lavado","4":"sito pons","5":"freddie spencer","6":"manfred herweh"},"500 cc":{"0":"wayne rainey","1":"kevin schwantz","2":"wayne gardner","3":"wayne gardner","4":"eddie lawson","5":"eddie lawson","6":"freddie spencer"},"report":{"0":"report","1":"report","2":"report","3":"report","4":"report","5":"report","6":"report"}}