if index != 0:
                            updated_subject = ' '.join(sentence_raw.split()[0 : index]) + ' '.join(sentence_raw.split()[prep_index + 1 : len(sentence_raw.split())])
                            updated_tag = sentence_tagged[0 : index] + sentence_tagged[prep_index + 1 : len(sentence_tagged)]
                        else:
                            updated_subject = ' '.join(sentence_raw.split()[prep_index + 1 : len(sentence_raw.split())])