Use a.any() or a.all()

As an AI language model, I do not have access to any specific variable or data structure to demonstrate the use of a.any() or a.all(). However, I can provide an example of how these methods can be used in Python:

a = [True, False, True, True]

# checks if at least one element is True
print(any(a)) # prints True

# checks if all elements are True
print(all(a)) # prints False

In this example, the any() function checks if at least one element in the list "a" is True, which is the case, so it returns True. The all() function checks if all elements in the list "a" are True, which is not the case, so it returns False.