Question: Is the local dialing code of a town,  whose OS grid reference is SE090254, equal to 01422?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Answer: yes
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "town" . ?e <OS_grid_reference> ?pv_1 . ?pv_1 <pred:value> "SE090254" . ?e <local_dialing_code> ?pv . ?pv <pred:value> "01422" .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: OS grid reference
SE090254
function: FilterConcept
dependencies: 1
inputs: town
function: QueryAttr
dependencies: 2
inputs: local dialing code
function: VerifyStr
dependencies: 3
inputs: 01422