test_ref	.	miRNA_primary_transcript	3617	3696	.	+	.	ID=MI0000001;Name=test-mir
test_ref	.	miRNA	3622	3643	.	+	.	ID=MIMAT0000062_2;Name=test-mir-5p;Derives_from=MI0000001
test_ref	.	miRNA	3673	3693	.	+	.	ID=MIMAT0004481_1;Name=test-mir-3p;Derives_from=MI0000001