((output
  (((f.ml (1 0) (1 7)) (code_block foo))
   ((f.ml (1 8) (1 11)) (paragraph (((f.ml (1 8) (1 11)) (word bar)))))))
 (warnings
  ( "File \"f.ml\", line 1, characters 8-11:\
   \nParagraph should begin on its own line.")))
