1. A method for learning objects and facts from documents, comprising: on a computer system having one or more processors and memory storing one or more programs for execution by the one or more processors, without user intervention: selecting a source object from a plurality of objects stored in a fact repository, the source object having an object name and an attribute-value pair; selecting a source document from a plurality of documents based on a determination that a title of the source document includes the object name of the source object; and content of the source document includes an attribute and a value related to the attribute-value pair of the source object; identifying a title pattern for the title of the source document based on a first syntax of (i) the title of the source document, and (ii) the object name of the source object within the title of the source document; identifying a contextual pattern for the content of the source document based on a second syntax of (i) the attribute and (ii) the value related to the attribute-value pair of the source object, the contextual pattern being a structural pattern in which one or more attribute-value pairs, including the attribute-value pair of the source object, are presented; selecting a second document from the plurality of documents based on a determination that (i) the contextual pattern is found in the second document and (ii) a title of the second document matches the title pattern; identifying a new object name and a new attribute-value pair from the second document by applying the title pattern and the contextual pattern identified from the source document to the second document; and storing into the fact repository the new attribute-value pair and a new object having the new object name.
14. The method of claim 1 , wherein identifying the title pattern for the title of the source document based on structural arrangement the object name of the source object includes: identifying, within the title of the source document, a substring corresponding to the object name of the source object; and determining, position of the substring relative to one or more other strings in the title of the source document.