Question: The Hiroshima Peace Memorial, is part of the Hiroshima Peace Memorial Park in Hiroshima, Japan and was designated a UNESCO World Heritage Site in 1996, the ruin serves as a memorial to the people who were killed in the atomic bombing of Hiroshima, during the final stage of World War II, the United States dropped nuclear weapons on the Japanese cities of Hiroshima and Nagasaki on which dates, respectively?
Sentence (from "Atomic bombings of Hiroshima and Nagasaki"): The two bombings, which killed at least 129,000 people, remain the only use of nuclear weapons for warfare in history.
Relevant evidence: No