1. A method of displaying related content on a user interface, the method comprising: analyzing, by one or more processors, an initial electronic document to identify a first mention in the initial electronic document; generating, by one or more processors, a first mention descriptor of the first mention in the initial electronic document according to a context of the initial electronic document; appending, by one or more processors, the first mention descriptor to the initial electronic document; mapping, by one or more processors, the first mention descriptor from the initial electronic document to a disambiguation identifier from a knowledge base that contains a version of the first mention, wherein the disambiguation identifier is an entity within the knowledge base; associating, by one or more processors, the disambiguation identifier with the initial electronic document; locating, by one or more processors, the disambiguation identifier on an entity metadata visualization panel, wherein the disambiguation identifier was appended to the entity metadata visualization panel after mapping the entity metadata visualization panel to the disambiguation identifier from the knowledge base, and wherein the entity metadata visualization panel was mapped to the disambiguation identifier by mapping a second mention descriptor for a second mention in the entity metadata visualization panel to the disambiguation identifier; retrieving, by one or more processors, the entity metadata visualization panel; and displaying, on the user interface, the entity metadata visualization panel as related content that is related to the first mention in the initial electronic document.
1. A method of displaying related content on a user interface, the method comprising: analyzing, by one or more processors, an initial electronic document to identify a first mention in the initial electronic document; generating, by one or more processors, a first mention descriptor of the first mention in the initial electronic document according to a context of the initial electronic document; appending, by one or more processors, the first mention descriptor to the initial electronic document; mapping, by one or more processors, the first mention descriptor from the initial electronic document to a disambiguation identifier from a knowledge base that contains a version of the first mention, wherein the disambiguation identifier is an entity within the knowledge base; associating, by one or more processors, the disambiguation identifier with the initial electronic document; locating, by one or more processors, the disambiguation identifier on an entity metadata visualization panel, wherein the disambiguation identifier was appended to the entity metadata visualization panel after mapping the entity metadata visualization panel to the disambiguation identifier from the knowledge base, and wherein the entity metadata visualization panel was mapped to the disambiguation identifier by mapping a second mention descriptor for a second mention in the entity metadata visualization panel to the disambiguation identifier; retrieving, by one or more processors, the entity metadata visualization panel; and displaying, on the user interface, the entity metadata visualization panel as related content that is related to the first mention in the initial electronic document. 6. The method of claim 1 , wherein the knowledge base contains multiple disambiguation identifiers, and wherein the method further comprises: hierarchically categorizing the multiple disambiguation identifiers; generating a graph of the hierarchically categorized disambiguation identifiers; and displaying, on the user interface, the graph of the hierarchically categorized disambiguation identifiers.