Translate the following natural language statement into a first-order logic

expression in Artificial Intelligence
1. All Students are smart
2. All dogs are mammals
3. Some mammals are not dogs
4. Everyone loves someone
5. Chala bought something

1 answer

Here are the translations of the given natural language statements into first-order logic expressions:

  1. All Students are smart.
    \[ \forall x , (Student(x) \rightarrow Smart(x)) \]

  2. All dogs are mammals.
    \[ \forall x , (Dog(x) \rightarrow Mammal(x)) \]

  3. Some mammals are not dogs.
    \[ \exists x , (Mammal(x) \land \neg Dog(x)) \]

  4. Everyone loves someone.
    \[ \forall x , \exists y , Loves(x, y) \]

  5. Chala bought something.
    \[ \exists x , Bought(Chala, x) \]

Each expression uses the following conventions:

  • \( \forall \) denotes "for all"
  • \( \exists \) denotes "there exists"
  • Predicates (like \( Student(x) \), \( Smart(x) \), etc.) represent properties or relations relevant to the objects and individuals in the domain.