In one embodiment, a method comprising accessing a first data object and a second data object of a data structure representing electronic content, the second data object being associated with the first data object, selecting, based on first content included in the first data object, a grammar rule included in a grammar, the grammar rule including a grammar rule item, and based on second content included in the second data object, selecting the grammar rule item included in the grammar rule, and based on the second content and the grammar rule item, generating a portion of a textual representation of the electronic content.