Question: When did  Texas Christian University  begin to have significant event mixed-sex education?
Choices: 1991-12-31
1873
2004-07-18
1940-01-26
1996-12-01
2014-01-18
2017-11-10
1981
1963-10-29
1997-06-06
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Texas Christian University" . ?e_2 <pred:name> "mixed-sex education" . ?e_1 <significant_event> ?e_2 . [ <pred:fact_h> ?e_1 ; <pred:fact_r> <significant_event> ; <pred:fact_t> ?e_2 ] <start_time> ?qpv .  }
Program:
function: Find
inputs: Texas Christian University
function: Find
inputs: mixed-sex education
function: QueryRelationQualifier
dependencies: 0
1
inputs: significant event
start time
Answer: 1873