15. A computer-readable medium, comprising: a plurality of computer-executable instructions which, when executed by one or more processors, cause the one or more processors to: identify, in a first document, a reference to a second document, the second document being different than the first document; identify that the reference to the second document is associated with a relation indicator, the relation indicator being associated with a link that references the second document; determine, based on identifying that the reference to the second document is associated with the relation indicator, that content of the second document is related to content of the first document, the plurality of computer-executable instructions to determine that the content of the second document is related to the content of the first document including: one or more instructions to translate the first document to obtain a translated first document, the translated first document being in a language that matches a language of the second document, one or more instructions to compare the translated first document to the second document to obtain a measure of similarity between the translated first document and the second document, and one or more instructions to determine, based on the comparing, that the content of the second document is related to the content of the first document when the measure of similarity satisfies a particular similarity threshold; and process the second document based on determining that the content of the second document is related to the content of the first document.
19. The computer-readable medium of claim 15 , where the plurality of computer-executable instructions determine that the content of the second document is related to the content of the first document include: one or more instructions to identify a first update frequency associated with the first document; one or more instructions to identify a second update frequency associated with the second document; one or more instructions to compare the first update frequency and the second update frequency to obtain the measure of similarity between the first update frequency and the second update frequency; and one or more instructions to determine, based on comparing the first update frequency and the second update frequency, that the content of the second document is related to the content of the first document when the measure of similarity satisfies the particular similarity threshold.