Read this: During fiscal year 2007, $537.5 million was received in total research support, including $444 million in federal obligations. The University has over 150 National Institutes of Health funded inventions, with many of them licensed to private companies. Governmental agencies and non-profit foundations such as the NIH, United States Department of Defense, National Science Foundation, and NASA provide the majority of research grant funding, with Washington University being one of the top recipients in NIH grants from year-to-year. Nearly 80% of NIH grants to institutions in the state of Missouri went to Washington University alone in 2007. Washington University and its Medical School play a large part in the Human Genome Project, where it contributes approximately 25% of the finished sequence. The Genome Sequencing Center has decoded the genome of many animals, plants, and cellular organisms, including the platypus, chimpanzee, cat, and corn.

What percentage of the sequencing did the Washington University Medical School contribute to the Human Genome Project?
What is the answer? (If it cannot be answered, return "unanswerable")
25%