@prefix : <http://example.org/ns#> .

:group1 a :Group ;
	:lastDate "2009-12-02T00:00:00Z" .

:msg1 a :Message ;
	:date "2009-12-01T00:00:00Z" ;
	:group :group1 .

:msg2 a :Message ;
	:date "2009-12-02T00:00:00Z" ;
	:group :group1 .

:group2 a :Group ;
	:lastDate "2009-12-05T00:00:00Z" .

:msg3 a :Message ;
	:date "2009-12-03T00:00:00Z" ;
	:group :group2 .

:msg4 a :Message ;
	:date "2009-12-04T00:00:00Z" ;
	:group :group2 .

:msg5 a :Message ;
	:date "2009-12-05T00:00:00Z" ;
	:group :group2 .