Question: What is the subreddit of an academic discipline whose Stack Exchange tag is https://math.stackexchange.com/tags/abstract-algebra ?
Choices: Chad
abstractalgebra
VHS
futbol
Mars
TheLastAirbender
belfast
mumbai
HongKong
curb
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "academic discipline" . ?e <Stack_Exchange_tag> ?pv_1 . ?pv_1 <pred:value> "https://math.stackexchange.com/tags/abstract-algebra" . ?e <subreddit> ?pv .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: Stack Exchange tag
https://math.stackexchange.com/tags/abstract-algebra
function: FilterConcept
dependencies: 1
inputs: academic discipline
function: QueryAttr
dependencies: 2
inputs: subreddit
Answer: abstractalgebra