Complex sentence: William Everett Pence-Biology teacher who assisted students with discovering the chromosomes of three cancer-related genes using equipment bought in part with Mr. Pence's 1999 California Teacher of the Year endowment.
Split into simpler sentences: William Everett Pence-Biology teacher who assisted students with discovering the chromosomes of three cancer-related genes. The discovery was made using equipment bought in part with Mr. Pence's 1999 California Teacher of the Year endowment.