Here are few lines from gff file
NC_000067.6 Gnomon exon 3670552 3671742 . - . ID=id1;Parent=rna0;Dbxref=GeneID:497097,Genbank:XM_006495550.2,MGI:MGI:3528744;gbkey=mRNA;gene=Xkr4;product=X Kell blood group precursor related family member 4%2C transcript variant X1;transcript_id=XM_006495550.2
NC_000067.6 Gnomon exon 3421702 3421901 . - . ID=id2;Parent=rna0;Dbxref=GeneID:497097,Genbank:XM_006495550.2,MGI:MGI:3528744;gbkey=mRNA;gene=Xkr4;product=X Kell blood group precursor related family member 4%2C transcript variant X1;transcript_id=XM_006495550.2
NC_000067.6 Gnomon exon 3213439 3216968 . - . ID=id3;Parent=rna0;Dbxref=GeneID:497097,Genbank:XM_006495550.2,MGI:MGI:3528744;gbkey=mRNA;gene=Xkr4;product=X Kell blood group precursor related family member 4%2C transcript variant X1;transcript_id=XM_006495550.2
NC_000067.6 Gnomon exon 3199731 3207317 . - . ID=id4;Parent=rna0;Dbxref=GeneID:497097,Genbank:XM_006495550.2,MGI:MGI:3528744;gbkey=mRNA;gene=Xkr4;product=X Kell blood group precursor related family member 4%2C transcript variant X1;transcript_id=XM_006495550.2
NC_000067.6 BestRefSeq exon 3670552 3671498 . - . ID=id5;Parent=rna1;Dbxref=GeneID:497097,Genbank:NM_001011874.1,MGI:MGI:3528744;gbkey=mRNA;gene=Xkr4;product=X Kell blood group precursor related family member 4;transcript_id=NM_001011874.1
NC_000067.6 BestRefSeq exon 3421702 3421901 . - . ID=id6;Parent=rna1;Dbxref=GeneID:497097,Genbank:NM_001011874.1,MGI:MGI:3528744;gbkey=mRNA;gene=Xkr4;product=X Kell blood group precursor related family member 4;transcript_id=NM_001011874.1
NC_000067.6 BestRefSeq exon 3214482 3216968 . - . ID=id7;Parent=rna1;Dbxref=GeneID:497097,Genbank:NM_001011874.1,MGI:MGI:3528744;gbkey=mRNA;gene=Xkr4;product=X Kell blood group precursor related family member 4;transcript_id=NM_001011874.1
NC_000067.6 Gnomon exon 3670552 3671742 . - . ID=id8;Parent=rna2;Dbxref=GeneID:497097,Genbank:XM_011238395.1,MGI:MGI:3528744;gbkey=mRNA;gene=Xkr4;product=X Kell blood group precursor related family member 4%2C transcript variant X3;transcript_id=XM_011238395.1