Premise: Howard Hughes . He spent the rest of the 1930s setting multiple world air speed records and building the Hughes H-1 Racer and H-4 Hercules ( the `` Spruce Goose '' ) . The Hughes H-4 Hercules ( also known as the `` Spruce Goose '' ; registration NX37602 ) is a prototype strategic airlift flying boat designed and built by the Hughes Aircraft Company . The aircraft made only one brief flight on November 2 , 1947 , and the project never advanced beyond the single example produced . The Hercules is the largest flying boat ever built and has the largest wingspan of any aircraft in history .
Hypothesis: Howard Hughes built an aircraft.
Label: ENTAILMENT