Question: What is the Libris-URI of the author of Lady Sings the Blues ?
Choices: wt7bkc2f1w42dg6
pm1477c752kp024
97mqz5st087ffmr
1zcfhq2k2x37w48
75kmjwfr4d93z03
tr58fj1c27m69bk
42gjk8zn0slfltw
rp369f291x8g7p8
dbqswnxx4w26nw3
rp356zl92fhkdfx
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <after_a_work_by> ?e . ?e_1 <pred:name> "Lady Sings the Blues" .  ?e <Libris-URI> ?pv .  }
Program:
function: Find
inputs: Lady Sings the Blues
function: Relate
dependencies: 0
inputs: after a work by
forward
function: FilterConcept
dependencies: 1
inputs: human
function: QueryAttr
dependencies: 2
inputs: Libris-URI
Answer: pm1477c752kp024