sentence: Next , to the explosion of the North American steamer , Maine , the Spanish commission created to investigate this explosion assures us that it could n't have been done from the outside , but must have been done from the inside .
modified: Next to the blow - up of the North American steamer Maine , the Spanish commission created to investigate this explosion assures that it could n't be done from the outside , but from the inside .
transformation: PUNCT, OTHER, PUNCT, PRON, VERB:TENSE, VERB