1. A method for determining relationships in tabular data, the method comprising: receiving a set of documents, a document in the set including the tabular data; selecting a cell in the tabular data whose dependencies are to be determined; selecting a hypothesis to use in conjunction with the cell; testing, using a processor and a memory, whether the hypothesis applies to a selected portion of the document by determining whether a conclusion in the hypothesis can be computed using a function specified in the hypothesis on the selected portion, wherein the selected portion of the document comprises one of a selected cell-range in the tabular data and content in a non-tabular portion of the document; and utilizing the hypothesis to describe the cell relative to the selected portion.