Complex sentence: The 1948 Venice Biennale awarded him first prize for painting, he visited Paris for the first time in 1956, and in 1957 he won the grand prize in São Paulo's Biennial.
Split into simpler sentences: The 1948 Venice Biennale awarded him first prize for painting. He visited Paris for the first time in 1956, and in 1957 he won the grand prize in São Paulo's Biennial.