Complex sentence: Rodríguez was co-founder of the Humanist Party in 1984 and was elected to the Chilean parliament in 1989 for the district of La Reina-Peñalolén and elected president of the Humanist Party in 1990.
Split into simpler sentences: Rodríguez was co-founder of the Humanist Party in 1984 and was elected to the Chilean parliament in 1989 for the district of La Reina-Peñalolén. She was elected president of the Humanist Party in 1990.