Question: Among the chemical element that is a nutrient of Allium cepa, Which has the smallest mass?
Choices: manganese
selenium
Lower Saxony
zinc
20th Century Fox Television
sodium
phosphorus
The Beach Boys
calcium
magnesium
SPARQL: SELECT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "chemical element" . ?e_1 <nutrient> ?e . ?e_1 <pred:name> "Allium cepa" .  ?e <mass> ?pv . ?pv <pred:value> ?v .  } ORDER BY ?v LIMIT 1
Program:
function: Find
inputs: Allium cepa
function: Relate
dependencies: 0
inputs: nutrient
forward
function: FilterConcept
dependencies: 1
inputs: chemical element
function: SelectAmong
dependencies: 2
inputs: mass
smallest
Answer: sodium