Question: What is the OS grid reference for Chelsea?
Choices: TQ405695
TQ510887
SY690906
TA040880
TQ315844
TQ355814
TQ255755
TQ275775
TQ883856
SU637523
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:name> "Chelsea" . ?e <OS_grid_reference> ?pv .  }
Program:
function: Find
inputs: Chelsea
function: QueryAttr
dependencies: 0
inputs: OS grid reference
Answer: TQ275775