7 Move the mouse cursor to the properties and change it to only show x-ray images. You deselect the "CGI" images by clicking in the checkbox in front of "CGI". Then you select the "X-Ray" by clicking in the checkbox in front of the "X-Ray" property. Now look at the number of images (c), there should be only four images.
8 If you want to see images that contains all the labels in the "Selected entities list" you click on the "Any" button (at number 8) and then click on the "All" alternative. In this case this will give you 0 images, therefor choose the "Any" alternative. This will give you the images that contain any of the labels in the "Selected entities list".
9 Click on the "Show" button.