Which of these is edible or not edible:
1. Banana
2. Laptop
3. Marmite
4. Tape
5. Mushroom
6. Pizza

The following are edible:
1. Banana
2. Marmite
3. Pizza

The following are not edible:
1. Laptop
2. Tape

The following may or may not be edible: 
1. Mushroom