Question: How many chemical elements are a nutrient of the taxon whose  taxon common name 甘藍 ?
Choices:
4
5
6
7
8
9
10
11
12
13
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: taxon common name
甘藍
function: FilterConcept
dependencies: 1
inputs: taxon
function: Relate
dependencies: 2
inputs: nutrient
forward
function: FilterConcept
dependencies: 3
inputs: chemical element
function: Count
dependencies: 4
SPARQL: SELECT (COUNT(DISTINCT ?e) AS ?count) WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "chemical element" . ?e_1 <nutrient> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "taxon" . ?e_1 <taxon_common_name> ?pv . ?pv <pred:value> "甘藍" .   }
Answer: 7