[['year', 'track', '250 cc', '500 cc', 'report'], ['1990', 'rijeka', 'carlos cardãs', 'wayne rainey', 'report'], ['1989', 'rijeka', 'sito pons', 'kevin schwantz', 'report'], ['1988', 'rijeka', 'sito pons', 'wayne gardner', 'report'], ['1987', 'rijeka', 'carlos lavado', 'wayne gardner', 'report'], ['1986', 'rijeka', 'sito pons', 'eddie lawson', 'report'], ['1985', 'rijeka', 'freddie spencer', 'eddie lawson', 'report'], ['1984', 'rijeka', 'manfred herweh', 'freddie spencer', 'report']]
when the 250cc was Sito Pons and the Track Rijeka the Year was 1986
when the 250cc was [ENT] and the [ENT] [ENT] the [ENT] was [ENT]