Assertion: chesterfield | /r/HasProperty | begun in the 1737
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Source sentences:
text: Begun in the 1737 and continued until the death of his son in 1768, Chesterfield wrote mostly instructive communications about geography, history, and classical literature, – with later letters focusing on politics and diplomacy – and the letters themselves were written in French, English, and Latin, in order to refine his son's grasp of the languages.