Question: What is the DOI prefix of the United States Fish and Wildlife Service?
Choices:
10.21980
10.18695
10.28953
10.26813
10.3996
10.18582
10.17077
10.4079
10.15353
10.18062
Program:
function: Find
inputs: United States Fish and Wildlife Service
function: QueryAttr
dependencies: 0
inputs: DOI prefix
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:name> "United States Fish and Wildlife Service" . ?e <DOI_prefix> ?pv .  }
Answer: 10.3996