Question: When did Rockville become the  capital of Montgomery County (the one that shares border with Loudoun County)?
Choices:
1978-10-10
1956-10-01
1994-07-01
1979-05-04
2005-12-10
1989
-45
1987-11-01
1776-09-06
2019-02-12
Answer: 1776-09-06
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Rockville" . ?e_2 <pred:name> "Montgomery County" . ?e_2 <shares_border_with> ?e_3 . ?e_3 <pred:name> "Loudoun County" . ?e_1 <capital_of> ?e_2 . [ <pred:fact_h> ?e_1 ; <pred:fact_r> <capital_of> ; <pred:fact_t> ?e_2 ] <start_time> ?qpv .  }
Program:
function: Find
inputs: Rockville
function: Find
inputs: Loudoun County
function: Relate
dependencies: 1
inputs: shares border with
backward
function: Find
inputs: Montgomery County
function: And
dependencies: 2
3
function: QueryRelationQualifier
dependencies: 0
4
inputs: capital of
start time