reference:
  class: File
  location: keep:a3af04432df3d71d22f2fe8be549ba96+5974/hg38.fa
fastq1:
  class: File
  location: keep:c96565a96cd428fe92bf70e97488bd80+21857/ERR1726424_1.fastq/ERR1726424_1.fastq.gz  
fastq2:
  class: File
  location: keep:0ea6e3aaa6ead18a2cc4ba67a22939e9+25007/ERR1726424_2.fastq/ERR1726424_2.fastq.gz
sample: ERR1726424