Complex sentence: Armenia's second largest city of Gyumri with a population of about 150,000, is well known for producing many prominent weightlifters, such as World and European weightlifting champions Yurik Vardanyan, Israel Militosyan, Gevorg Davtyan, Tigran G. Martirosyan and Nazik Avdalyan.
Split into simpler sentences: Armenia's second largest city of Gyumri with a population of about 150,000, is well known for producing many great weightlifters. Many World and European weightlifting champions hail from the city of Gyumri, such as Yurik Vardanyan, Israel Militosyan, Gevorg Davtyan, Tigran G. Martirosyan and Nazik Avdalyan.