We have recently developed a computational method to accelerate inorganic materials discovery by identifying compositions that are likely to yield new compounds. To demonstrate the method, we have identified a small region of the Sr-Y-Ca-Ga-O phase field and discovered two new compounds with two new structures within it. This work is currently in revision at Nature. As a response to initial reviews, we have successfully modified one of our new compounds (a structural derivative of melilite) to enhance its oxide ion conductivity, in an attempt to demonstrate that our route may lead to new functional materials. We wish to collect neutron powder diffraction on the modified melilite to identify the interstitial oxide ions that provide the ionic conductivity, and hence underpin our physical observations with structural understanding, to form a key part of the revised manuscript.