- Iron is always magnetic
- Iron filings are made of small pieces of iron
- So, iron fillings are always magnetic

- Iron fillings are always magnetic
- Black pepper is always nonmagnetic
- So, the mixture of iron fillings and black pepper is a mixture of magnetic and nonmagnetic material

- The mixture of iron fillings and black pepper is a mixture of magnetic and nonmagnetic material
- Magnet can be used for separating a magnetic material from a mixture of a magnetic and nonmagnetic material
- Therefore, magnet can be used to separate a mixture of iron fillings and black pepper

Therefore, magnet can be used to separate a mixture of iron fillings and black pepper
Question: Which equipment will best separate a mixture of iron filings and black pepper?
Context: - Iron is always magnetic 
- Iron filings are made of small pieces of iron 
- Magnet can be used for separating a magnetic material from a mixture of a magnetic and nonmagnetic material 
- Black pepper is always nonmagnetic