Sample graphs and sequences for testing sequence-to-graph alignment

File descriptions:

• HLA-61.agc: 61 complete HLA sequences, including GRCh38, CHM13 and 59 haplotypes extracted from HPRC year-1 assemblies. Use AGC to extract individual haplotype sequences.
• HLA-57.gfa.gz: sequence graph constructed by minigraph-r434, excluding sample HG002 and HG005
• C4-96.agc: 96 complete C4 sequences obtained from HPRC
• C4-90.gfa.gz: sequence graph extracted from the full HPRC year-1 minigraph graph around the C4A/C4B genes. The graph takes GRCh38 as the reference and excludes sample HG002, HG005 and NA19240.