In 1969, he drew up the report proposing the expulsion from the party of the Manifesto group. In 1984, after Berlinguer's death, Natta was elected as party secretary.
Natta served as secretary until his death.
( z1 serve :ARG0 ( z2 person :name ( z3 name :op "Natta" ) ) :ARG1 ( z4 secretary ) :time ( z5 until :op ( z6 die :ARG1 z2 ) ) )