- Granite contains mica
- Granite contains feldspar
- Granite contains quartz
- Hence, granite is made of quartz, feldspar, and mica

- Feldspar is a kind of mineral
- Mica is a kind of mineral
- Quartz is a kind of mineral
- So, quartz, feldspar, and mica are minerals

- Granite is made of quartz, feldspar, and mica
- Quartz, feldspar, and mica are minerals
- Hence, granite is made of minerals

- Granite is made of minerals
- Granite is a kind of rock
- So, rock is made of minerals

So, rock is made of minerals
[Question]Granite is classified as a rock because it
[Context]- Granite contains mica 
- Feldspar is a kind of mineral 
- Mica is a kind of mineral 
- Granite contains feldspar 
- Quartz is a kind of mineral 
- Granite is a kind of rock 
- Granite contains quartz