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Sergio Osmeña III, the grandson of Sergio Osmeña, was a prominent Filipino politician who served as a senator from 1971 to 1972 and again from 1987 to 1998. He was known for his advocacy for human rights, social justice, and economic development. Osmeña III's political career spanned several decades, and he played a significant role in shaping Philippine politics during the post-Marcos era.