strain_id	description	flag	length
NC_003047.1	Sinorhizobium meliloti 1021, complete genome	genbank	3654135
NC_003037.1	Sinorhizobium meliloti 1021 plasmid pSymA, complete sequence	genbank	1354226
NC_003078.1	Sinorhizobium meliloti 1021 plasmid pSymB, complete sequence	genbank	1683333
