@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix : <http://example.org/ns2#> .

<a1> a rdfs:Resource .

# this is a complete turtle document
# In-scope base URI is the document URI at this point
<a1> :b4 <c1> .
@base <http://example.org/ns/> .
# In-scope base URI is http://example.org/ns/ at this point
# <a2> <http://example.org/ns/b2> <c2> .
@base <foo/> .
# In-scope base URI is http://example.org/ns/foo/ at this point
<a3> a rdfs:Resource .
<a3> :b3 <c3> .
@prefix : <bar#> .
:a4 a rdfs:Resource .
:a4 :b4 :c4 .
:a5 a rdfs:Resource .
:a5 :b5 :c5 .
