#@prefix rdf:    <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
#@prefix rdfs:   <http://www.w3.org/2000/01/rdf-schema#> .
#@prefix rss:    <http://purl.org/rss/1.0/> .
#@prefix foaf:   <http://xmlns.com/foaf/0.1/> .
#@prefix wn:     <http://xmlns.com/wordnet/1.6/> .
#@prefix dc:     <http://purl.org/dc/elements/1.1/> .
#@prefix ex:      <http://id.ninebynine.org/example/> .
@prefix ex:      <ex:> .
@prefix a:       <prefa:> .
@prefix :        <default:> .

# ex:subj1 ex:prop ( ex:list1 ex:list2 ) .

# ex:subj2 :- [ ex:prop ex:obj ] .

# ex:subj3 :- (ex:mem) .

# ex:subj4 :- () .

# ex:subj5 ex:prop5 ex:obj5 ; :- () .

# ex:subj6 ex:prop6 ex:obj6 , (ex:mem) .

# ex:subj7 ex:prop7 ex:obj7 ; :- (ex:mem) .

# ex:subj8 ex:prop8 ( "abc" "def" ) .

### ex:subj9 a:prop9 .  # invalid syntax

# ex:subj9 a :type9 .

### ex:subj10 ex:prop10 a .  # invalid syntax

# ex:a a :a .

ex:subj11 ex:prop11 { ex:label11 . ex:s ex:p ex:o . } .