8. The computing system of claim 5 , the memory further comprises instructions that further configure the computing system to: prior to providing the third plurality of features from the second block to the second classifier, to: compare words in the second title portion of the second block with a first list of words, an occurrence of which indicates that the second block is likely to occur prior to a block from which the hypothetical person would be likely to begin reading the first electronic document; determine that none of the words in the second title portion correspond to words in the first list; compare the words in the second title portion of the second block with a second list of words, an occurrence of which indicates that the hypothetical person would be likely to begin reading the first electronic document at the second block; and determine that none of the words in the second title portion of the second block correspond to words in the second list.
5. The computing system of claim 4 , the memory further comprises instructions that further configure the computing system to: determine a third plurality of features from the second block, the third plurality of features relating, at least in part, to the second title portion; provide the third plurality of features to a second classifier, the second classifier to identify whether the second block is likely to be where the hypothetical person would begin reading the first electronic document based on the second title portion; and determine, based on a third score output by the second classifier in response to the third plurality of features, that the second block is not likely to be where the hypothetical person would begin reading the first electronic document, wherein the third score is determined prior to the second plurality of features being provided to the first classifier.