Merge the two sentences in the most fluent way.
My car was stolen. It had sentimental value.
My car, which had sentimental value, was stolen.
Complete the following task based on the instruction and optional input provided.### Instruction:
Merge the two sentences in the most fluent way.

### Input:
My car was stolen. It had sentimental value.

### Output:
My car, which had sentimental value, was stolen.