rtokens: Four years later , after winning his third world crown , he announced his retirement .
pos: CD : NNP NN VBG NN NNP NNP VBD DT NNP NNP NNP TO VB PRP$ JJ NN NN .
tokens: 1969 - Scottish motor racing driver Jackie Stewart won the Italian Grand Prix to secure his first world championship .
ltokens: Over 300 people were killed on this day alone .