Question: What is the birth name of the person with the official website of http://www.usherworld.com?
Choices: James Buchanan, Jr.
Leonida Christos Bertos
Elisabeth Singleton Moss
Jennifer Kate Hudson
Joshua Blake Kennedy
Ian David McShane
Gerard James Butler
William Bradley Pitt
O'Shea Jackson Sr
Usher Raymond IV
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <official_website> ?pv_1 . ?pv_1 <pred:value> "http://www.usherworld.com" . ?e <birth_name> ?pv .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: official website
http://www.usherworld.com
function: FilterConcept
dependencies: 1
inputs: human
function: QueryAttr
dependencies: 2
inputs: birth name
Answer: Usher Raymond IV