1. A method for specifying a subset of data, comprising: receiving input into a natural language tool having at least one field, the input associated with a first data entity, the natural language tool configured to specify a subset of a data group using field data associated with the at least one field; automatically configuring a second field in the natural language tool with relationship data associated with the first data entity and a second data entity; and providing a third field in the natural language tool, the third field associated with the second data entity.