@ Xhristina and Zenobia. Thank you very much for your answers.
I have a couple of more questions pertaining to the SoP:
1. Is it advisable to start the SoP with an anecdote/case study that is closely related to what one intends to study at Oxford?
2. Does anyone here have experience of submitting a sample of writing in language other than English. Specifically, given that I am applying to Oriental Studies department, I would like to demonstrate my knowledge of Arabic somehow. However, although well-written, the topic of that paper is very different from the one I intend to study.
Once again, thanks a lot.