Summarize a list of four items into a single sentence.
House, car, dog, cat
The list contains four items: a house, a car, a dog, and a cat.
Complete the following task based on the instruction and optional input provided.### Instruction:
Summarize a list of four items into a single sentence.

### Input:
House, car, dog, cat

### Output:
The list contains four items: a house, a car, a dog, and a cat.