--- 
mappings: 
  - 
    mapped: 
      assembly: GRCh37
      coord_system: chromosome
      end: 40000
      seq_region_name: 1
      start: 25000
      strand: -1
    original: 
      assembly: GRCh38
      coord_system: chromosome
      end: 40000
      seq_region_name: 1
      start: 25000
      strand: -1