Question: Of all the chemical compounds with a pKa less than 20, which has the largest mass?
Choices:
ethanol
L-Histidine
L-Isoleucine
L-Valine
arachidonic acid
glycine
L-aspartic Acid
L-Tyrosine
L-phenylalanine
L-alanine
Program:
function: FindAll
function: FilterNum
dependencies: 0
inputs: pKa
20
<
function: FilterConcept
dependencies: 1
inputs: chemical compound
function: SelectAmong
dependencies: 2
inputs: mass
largest
SPARQL: SELECT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "chemical compound" . ?e <pKa> ?pv_1 . ?pv_1 <pred:unit> "1" . ?pv_1 <pred:value> ?v_1 . FILTER ( ?v_1 < "20"^^xsd:double ) . ?e <mass> ?pv . ?pv <pred:value> ?v .  } ORDER BY DESC(?v) LIMIT 1
Answer: arachidonic acid