How to show training/val data filtered by class name?

In the last week notebook we can show the most confused matrix using interp.most_confused(). Let’s say the output is something like this :

(‘Egyptian_Mau’, ‘Bengal’, 10),
(‘american_pit_bull_terrier’, ‘staffordshire_bull_terrier’, 8).

I want to know how to see training/val data based on class name as an input ?