Do the following 3 things respectively with each of the two sentences given below:

1. Translate it by using the defined predicate symbols and a quantifier;

2. Transform it into an equivalent statement with a quantifier different from the one used in the 1st translation (by applying QN); and

3. Articulate the corresponding sentence of the 2nd translation in ordinary English.

Not all dogs bark. D: being a dog B: barking

All philosophers are neither impractical nor unrealistic.

P: being a philosopher I : being impractical U: being unrealistic