Question: What is the area of the United States city that has been the headquarters location of Sierra Entertainment since 1993?
Choices: 87.361944 square kilometre
65.244957 square kilometre
32.424751 square kilometre
29743.423459 square kilometre
6207 square kilometre
1350 square kilometre
135.02 square kilometre
891.68 square kilometre
23998 square kilometre
18293.0 square kilometre
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "city of the United States" . ?e_1 <headquarters_location> ?e . ?e_1 <pred:name> "Sierra Entertainment" .  [ <pred:fact_h> ?e_1 ; <pred:fact_r> <headquarters_location> ; <pred:fact_t> ?e ] <start_time> ?qpv . ?qpv <pred:year> 1993 . ?e <area> ?pv .  }
Program:
function: Find
inputs: Sierra Entertainment
function: Relate
dependencies: 0
inputs: headquarters location
forward
function: QFilterYear
dependencies: 1
inputs: start time
1993
=
function: FilterConcept
dependencies: 2
inputs: city of the United States
function: QueryAttr
dependencies: 3
inputs: area
Answer: 87.361944 square kilometre