How to check two columns for the presence of text and returning "yes" or "no"

Hello.

I posted earlier, but the requirements of my spreadsheet are slightly more complicated than I first thought!

Please see spreadsheet attached.

I now need to create a formula to go into column C of sheet 2. For instance, in cell C1, it should return the value "Yes" if the value in the cell A1 (of sheet 2) is present in the whole range of cells of Column A, and the value in cell B1 (of sheet 2) is present in the whole range of cells of Column C.

If this condition is not met, cell C1 should return the value "No".

A slight variation on my earlier query, but I don't seem to be able to get the foruma right.

Again, many thanks in advance for any assistance offered.

Best regards,

Ian
(Karelia Suite)