Question: Which United States college or university has the significant event of mixed-sex education (beginning in 1869) and the PermID of 5056444574?
Choices: North Dakota State University
University of Maine
University of Minnesota
Virginia Tech
Iowa State University
University of Arkansas
Montana State University - Bozeman
University of Idaho
North Carolina Agricultural and Technical State University
Kansas State University
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "colleges and universities in the United States" . ?e <significant_event> ?e_1 . ?e_1 <pred:name> "mixed-sex education" .  [ <pred:fact_h> ?e ; <pred:fact_r> <significant_event> ; <pred:fact_t> ?e_1 ] <start_time> ?qpv . ?qpv <pred:year> 1869 . ?e <PermID> ?pv . ?pv <pred:value> "5056444574" .  }
Program:
function: Find
inputs: mixed-sex education
function: Relate
dependencies: 0
inputs: significant event
backward
function: QFilterYear
dependencies: 1
inputs: start time
1869
=
function: FilterConcept
dependencies: 2
inputs: colleges and universities in the United States
function: FindAll
function: FilterStr
dependencies: 4
inputs: PermID
5056444574
function: FilterConcept
dependencies: 5
inputs: colleges and universities in the United States
function: And
dependencies: 3
6
function: What
dependencies: 7
Answer: Iowa State University