WOW I saw that speech last night by EDWARD KENNEDY and boy it was powerful . Despite his illness , he sounded so strong and certain in the words that he spoke . I do n't know who wrote his speech , but it was a very memorable one . Goes to show that he really does have politics running in his veins .

OPT: [i] He has a sad personal history and a sad family history , and it 's nice to see him transcend that; [ii] He has been released from a long term incarceration and the speaker is happy for him; [iii] He has announced his bid to run for president of the united states and the speaker is overjoyed; [iv] Against all odds , he has won the election for state senator and it 's a powerful success story;
Answer the following question: What leads the speaker to refer to the speech as memorable ?
[i]