You might want to add some relation between the versions of Ada. Each is basically a superset of the previous version. You could treat them as one, and specify

You might want to add some relation between the versions of Ada. Each is basically a superset of the previous version. You could treat them as one, and specify per feature from which version onward it is part of the language, e.g. https://www.adaic.org/advantages/ada-comp-chart https://www.adaic.org/advantages/ada-comp-chart