In the first and third statements, the common code digit is '6' and the common word is 'hot'.
So '6' means 'hot'.
In the second and third statements, the common code digit is '3' and the common word is 'is'.
So '3' means 'is'.
In the first and second statements, the common code digit is '7' and the common word is 'sweet'.
So, in the second statement, '5' means 'coffee'.