What is the probable cause of this symptom
Severe chest pain
The probable cause of this symptom could be a heart attack, pulmonary embolism, pneumonia, or pleurisy.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the probable cause of this symptom

### Response:
The probable cause of this symptom could be a heart attack, pulmonary embolism, pneumonia, or pleurisy.