Answer the following question given this paragraph: 

When iron filings and sulfur powder are mixed together in any ratio, they form a mixture. No chemical reaction occurs, and both elements retain their individual properties. A magnet can be used to mechanically separate the two elements by attracting the iron filings out of the mixture and leaving the sulfur behind.


Q: What can be used to mechanically separate the two elements by attracting the iron filings out of the mixture and leaving the sulfur behind?


A:
magnet