"A screenshot of three tables. At the top two tables with an X icon in between. The first table with Post ID and Message columns, with three rows and the following values in Message column: ""New Book! Master Powerpoint"", ""Special Offer: Microsoft Word"" and ""Excel the art of Microsoft Excel"". The second table on the top right side include a single Keyword column, and the values: ""excel"", ""powerpoint"" and ""microsoft word"". An arrow points down to a table at the bottom, which represents all the combinations between single rows from the top tables."