Question: Of chemical elements discovered in the United Kingdom, which has the lowest atomic number?
Choices: Rollins College
sodium
calcium
selenium
zinc
Merlin
magnesium
manganese
Rory Gallagher
phosphorus
SPARQL: SELECT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "chemical element" . ?e <location_of_discovery> ?e_1 . ?e_1 <pred:name> "United Kingdom" .  ?e <atomic_number> ?pv . ?pv <pred:value> ?v .  } ORDER BY ?v LIMIT 1
Program:
function: Find
inputs: United Kingdom
function: Relate
dependencies: 0
inputs: location of discovery
backward
function: FilterConcept
dependencies: 1
inputs: chemical element
function: SelectAmong
dependencies: 2
inputs: atomic number
smallest
Answer: sodium