"http://example.org/ns#group1"	"group"
"http://example.org/ns#group2"	"group"
"http://example.org/ns#msg1"	"message"
"http://example.org/ns#msg2"	"message"
"http://example.org/ns#msg3"	"message"
"http://example.org/ns#msg4"	"message"
"http://example.org/ns#msg5"	"message"
