Question: What is the date of birth of Al Green whose official website is http://algreen.house.gov?
Choices:
1936-05-27
1947-09-01
1902-02-27
1952-04-28
1935-03-11
1948-10-18
1873-09-10
1978-07-26
1952-10-08
1980-12-18
Answer: 1947-09-01
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:name> "Al Green" . ?e <official_website> ?pv_1 . ?pv_1 <pred:value> "http://algreen.house.gov" . ?e <date_of_birth> ?pv .  }
Program:
function: Find
inputs: Al Green
function: FilterStr
dependencies: 0
inputs: official website
http://algreen.house.gov
function: QueryAttr
dependencies: 1
inputs: date of birth