[['1950', 'general 1950', 'senate 1950', 'house 1950', 'governors 1950'], ['1952', 'general 1952', 'senate 1952', 'house 1952', 'governors 1952'], ['1954', 'general 1954', 'senate 1954', 'house 1954', 'governors 1954'], ['1956', 'general 1956', 'senate 1956', 'house 1956', 'governors 1956'], ['1958', 'general 1958', 'senate 1958', 'house 1958', 'governors 1958'], ['1960', 'general 1960', 'senate 1960', 'house 1960', 'governors 1960'], ['1962', 'general 1962', 'senate 1962', 'house 1962', 'governors 1962'], ['1964', 'general 1964', 'senate 1964', 'house 1964', 'governors 1964'], ['1966', 'general 1966', 'senate 1966', 'house 1966', 'governors 1966'], ['1968', 'general 1968', 'senate 1968', 'house 1968', 'governors 1968'], ['1970', 'general 1970', 'senate 1970', 'house 1970', 'governors 1970'], ['1971', 'general 1971', 'senate 1970', 'house 1970', 'governors 1971'], ['1972', 'general 1972', 'senate 1972', 'house 1972', 'governors 1972'], ['1973', 'general 1973', 'senate 1972', 'house 1972', 'governors 1973'], ['1974', 'general 1974', 'senate 1974', 'house 1974', 'governors 1974'], ['1975', 'general 1975', 'senate 1974', 'house 1974', 'governors 1975'], ['1976', 'general 1976', 'senate 1976', 'house 1976', 'governors 1976'], ['1977', 'general 1977', 'senate 1976', 'house 1976', 'governors 1977'], ['1978', 'general 1978', 'senate 1978', 'house 1978', 'governors 1978'], ['1979', 'general 1979', 'senate 1978', 'house 1978', 'governors 1979'], ['1980', 'general 1980', 'senate 1980', 'house 1980', 'governors 1980'], ['1981', 'general 1981', 'senate 1980', 'house 1980', 'governors 1981'], ['1982', 'general 1982', 'senate 1982', 'house 1982', 'governors 1982'], ['1983', 'general 1983', 'senate 1982', 'house 1982', 'governors 1983'], ['1984', 'general 1984', 'senate 1984', 'house 1984', 'governors 1984'], ['1985', 'general 1985', 'senate 1984', 'house 1984', 'governors 1985'], ['1986', 'general 1986', 'senate 1986', 'house 1986', 'governors 1986'], ['1987', 'general 1987', 'senate 1986', 'house 1986', 'governors 1987'], ['1988', 'general 1988', 'senate 1988', 'house 1988', 'governors 1988'], ['1989', 'general 1989', 'senate 1988', 'house 1988', 'governors 1989'], ['1990', 'general 1990', 'senate 1990', 'house 1990', 'governors 1990'], ['1991', 'general 1991', 'senate 1990', 'house 1990', 'governors 1991'], ['1992', 'general 1992', 'senate 1992', 'house 1992', 'governors 1992'], ['1993', 'general 1993', 'senate 1992', 'house 1992', 'governors 1993'], ['1994', 'general 1994', 'senate 1994', 'house 1994', 'governors 1994'], ['1995', 'general 1995', 'senate 1994', 'house 1994', 'governors 1995'], ['1996', 'general 1996', 'senate 1996', 'house 1996', 'governors 1996'], ['1997', 'general 1997', 'senate 1996', 'house 1996', 'governors 1997'], ['1998', 'general 1998', 'senate 1998', 'house 1998', 'governors 1998'], ['1999', 'general 1999', 'senate 1998', 'house 1998', 'governors 1999']]
there was a General Election held every 2 year between 1950 and 1970
there was a [ENT] [ENT] held every 2 year between [ENT] and [ENT]