3.5. We also want to query by Gender. Due to the way that the study was originally set up, the Gender field isn't included in the default set of annotations – it's part of a separately defined set called 'Demographic'.
To add Gender as a field, go back to the original drop-down list (the one at the top), click on it again, click on 'Demographic' in the list, and then click on the 'Add' button to the right of the list.
Select Demographic (highlighted in red) from the drop-down list, then click on the Add button (also highlighted in red).
