According to an aspect of an embodiment, an apparatus for analyzing and determining correlation of information contained in a given form containing blocks, at least one of the blocks containing data indicative of a header, the rest of the blocks containing data in association with header information, comprising: a memory for storing templates having nodes, character data associated with said nodes respectively, and relative position information between said nodes; and a processor for analyzing and determining correlation of the information according to a process comprising: obtaining data contained in said blocks in the given form, determining relative position of said blocks to produce relative position information, analyzing the data obtained from the blocks and the relative position information of the blocks in comparison with the character data and the relative position information of said nodes of said templates, and determining correlation of the data contained in said blocks.