Complex sentence: George Joseph Stigler (January 17,1911--December 1,1991) was a U.S. economist, the 1982 laureate in Nobel Memorial Prize in Economic Sciences and a key leader of the Chicago School of Economics.
Split into simpler sentences: George Joseph Stigler (January 17,1911--December 1,1991) was a U.S. economist. He won the Nobel Memorial Prize in Economic Sciences in 1982 and was a key leader of the Chicago School of Economics.