Question: What is its DOI prefix of the land-grant university in which J. T. Walsh studied?
Choices: 10.18695
10.3776
10.25148
10.23860
10.7814
10.22191
10.22215
10.18737
10.21980
10.18199
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "land-grant university" . ?e_1 <educated_at> ?e . ?e_1 <pred:name> "J. T. Walsh" .  ?e <DOI_prefix> ?pv .  }
Program:
function: Find
inputs: J. T. Walsh
function: Relate
dependencies: 0
inputs: educated at
forward
function: FilterConcept
dependencies: 1
inputs: land-grant university
function: QueryAttr
dependencies: 2
inputs: DOI prefix
Answer: 10.23860