Question: What was the codename of the plutonium-based bomb created in the Second World War?
Sentence: Two major types of atomic bombs were developed by the United States during World War II: a uranium-based device (codenamed "Little Boy") whose fissile material was highly enriched uranium, and a plutonium-based device (see Trinity test and "Fat Man") whose plutonium was derived from uranium-238.
Answer in sentence: yes