When using the filters in Dimensions, results from a search may return results which seem to contradict the filter applied. This is because filters are applied to documents (publications, grants, clinical trials, patents or policy documents), which may contain more than one attribute. 

For example, there may be two authors for a publication who work at different research organisations - University A and University B. Therefore using a filter for “University A”, and then looking at the results list in “Research Organisation” will give both University A as well as University B, because the filter has been applied to the document, and the document also contains an affiliation to University B. This can be extremely useful when examining the collaborations between institutions.