Question: What type of medicine is the opposite of a prescription drug?
Choices:
antibiotic
over-the-counter drug
iron
analgesic
Lemony Snicket's A Series of Unfortunate Events
Cat Stevens
prescription drug
Terminator Salvation
copper
Harlem Renaissance
Program:
function: Find
inputs: prescription drug
function: Relate
dependencies: 0
inputs: opposite of
backward
function: FilterConcept
dependencies: 1
inputs: medication
function: What
dependencies: 2
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "medication" . ?e <opposite_of> ?e_1 . ?e_1 <pred:name> "prescription drug" .   }
Answer: over-the-counter drug