s,p,o
http://example.org/s1,http://example.org/p1,1
http://example.org/s2,http://example.org/p2,2.2
http://example.org/s3,http://example.org/p3,-3
http://example.org/s4,http://example.org/p4,"4,4"
http://example.org/s5,http://example.org/p5,"5,5"
http://example.org/s6,http://example.org/p6,1.0E6
http://example.org/s7,http://example.org/p7,a7
