Question: Regarding the person with the United Church of Christ religion and Twitter username of POTUS44, tell me the subject role.
Choices: district of the Czech Republic
Founder
President of the United States
state
Sukhothai Kingdom
touring band member
London borough
distributor
Intelectual author
town
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <religion> ?e_1 . ?e_1 <pred:name> "United Church of Christ" .  ?e <Twitter_username> ?pv . ?pv <pred:value> "POTUS44" . [ <pred:fact_h> ?e ; <pred:fact_r> <Twitter_username> ; <pred:fact_t> ?pv ] <subject_has_role> ?qpv .  }
Program:
function: Find
inputs: United Church of Christ
function: Relate
dependencies: 0
inputs: religion
backward
function: FilterConcept
dependencies: 1
inputs: human
function: QueryAttrQualifier
dependencies: 2
inputs: Twitter username
POTUS44
subject has role
Answer: President of the United States