information
  assumption
  end assumption
end information

# (information (@ 1 0-11)
#   (.inner
#     (assumption (@ 2 2-12)
#       (.inner nil)
#     )
#   )
# )
# :2:2–12: error: assumption clause inside information clause
#    assumption
#    ^^^^^^^^^^
# :1:0–11: note: outer information clause defined here
#  information
#  ^^^^^^^^^^^