Question: Which one of the chemical elements discovered in a year other than 1755 is the lightest ?
Choices: manganese
Alison Krauss
The Wharton School
calcium
zinc
phosphorus
BAFTA Award for Best Adapted Screenplay
magnesium
selenium
sodium
SPARQL: SELECT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "chemical element" . ?e <time_of_discovery_or_invention> ?pv_1 . ?pv_1 <pred:year> ?v_1 . FILTER ( ?v_1 != 1755 ) . ?e <mass> ?pv . ?pv <pred:value> ?v .  } ORDER BY ?v LIMIT 1
Program:
function: FindAll
function: FilterYear
dependencies: 0
inputs: time of discovery or invention
1755
!=
function: FilterConcept
dependencies: 1
inputs: chemical element
function: SelectAmong
dependencies: 2
inputs: mass
smallest
Answer: sodium