Queried GO terms:

  idGO:0031974   Detailed information
  namemembrane-enclosed lumen
  namespacecellular_component
  def"The enclosed volume within a sealed membrane or between two sealed membranes. Encompasses the volume enclosed by the membranes of a particular organelle, e.g. endoplasmic reticulum lumen, or the space between the two lipid bilayers of a double membrane surrounding an organelle, e.g. nuclear envelope lumen." [GOC:add, GOC:mah]
  is_aGO:0005575 ! cellular_component

No monarch genes has this GO term.