Complex sentence: Phi Delta Gamma (ΦΔΓ) of Puerto Rico is the first Puerto Rican organization of Greek letters, which was founded in the western town of Mayagüez, on April 25,1942.
Split into simpler sentences: Phi Delta Gamma (ΦΔΓ) of Puerto Rico is the first Puerto Rican organization of Greek letters. It was founded in the western town of Mayagüez, on April 25,1942.