He was re - elected in 1959 , 1963 , 1967 , 1971 , 1975 , 1977 and 1981 , and all of his victories after from 1971 on were by landslide margins .
Head entity: 1963 Q7094970 8
Tail entity: 1959 Q7094969 6
Relation (head \u2192 tail): P155
Inverse relation (tail \u2192 head): P156