Question: For the person who is David Beckham's (the start time of this statement is 1999-07-04) spouse, what is her Twitter username?
Choices: caallboys
ProcterGamble
Stadt_FFM
JonBonJoviJBJ
victoriabeckham
fredrikstadfk
UCLA
snkpofficial_jp
boro
carrieffisher
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <spouse> ?e . ?e_1 <pred:name> "David Beckham" .  [ <pred:fact_h> ?e_1 ; <pred:fact_r> <spouse> ; <pred:fact_t> ?e ] <start_time> ?qpv . ?qpv <pred:date> "1999-07-04"^^xsd:date . ?e <Twitter_username> ?pv .  }
Program:
function: Find
inputs: David Beckham
function: Relate
dependencies: 0
inputs: spouse
forward
function: QFilterDate
dependencies: 1
inputs: start time
1999-07-04
=
function: FilterConcept
dependencies: 2
inputs: human
function: QueryAttr
dependencies: 3
inputs: Twitter username
Answer: victoriabeckham