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Find Minimum in Heterogeneous List

Write a Python function `min_val` that takes a heterogeneous list as input and returns the smallest integer value from the list. The list may contain elements of various types, but only integers should be considered when determining the minimum value.

#### Example Usage
```python [main.nopy]
print(min_val(['Python', 3, 2, 4, 5, 'version']))  # Output: 2
print(min_val(['Python', 15, 20, 25]))            # Output: 15
print(min_val(['Python', 30, 20, 40, 50, 'version']))  # Output: 20
```

#### Constraints
- The input list will always contain at least one integer.
- Non-integer elements should be ignored when finding the minimum value.
def min_val(listval):
    """
    Find the minimum integer value in a heterogeneous list.

    Args:
        listval (list): A list containing elements of various types.

    Returns:
        int: The smallest integer value in the list.
    """
    # Filter the integers and find the minimum value
    pass  # Replace this with your implementation
Intermediate listsfunctions
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