Question: If we know a time zone of Yuma (the one that is located in time zone Mountain Time Zone), which period is its timezone offset of -6 hours valid in?
Choices: standard time
Vichy France
1910s
First French Empire
present
Provisional Government of the French Republic
daylight saving time
French Third Republic
Royal Audiencia of Quito
masculine plural
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "time zone" . ?e_1 <located_in_time_zone> ?e . ?e_1 <pred:name> "Yuma" . ?e_1 <located_in_time_zone> ?e_2 . ?e_2 <pred:name> "Mountain Time Zone" .  ?e <timezone_offset> ?pv . ?pv <pred:unit> "hour" . ?pv <pred:value> "-6"^^xsd:double . [ <pred:fact_h> ?e ; <pred:fact_r> <timezone_offset> ; <pred:fact_t> ?pv ] <valid_in_period> ?qpv .  }
Program:
function: Find
inputs: Mountain Time Zone
function: Relate
dependencies: 0
inputs: located in time zone
backward
function: Find
inputs: Yuma
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: located in time zone
forward
function: FilterConcept
dependencies: 4
inputs: time zone
function: QueryAttrQualifier
dependencies: 5
inputs: timezone offset
-6 hour
valid in period
Answer: daylight saving time