#Defining a function
def is_aggregated(lst):
return any(isinstance(item, (list, tuple, set, frozenset)) for item in lst)
#Creating a list
my_list1 = [1, 2, 3]
my_list2 = [1, [2, 3], 4]
my_list3 = [1, [2, [3, 4]], 5]
#Checking nesting
print(is_aggregated(my_list1)) # False
print(is_aggregated(my_list2)) # True
print(is_aggregated(my_list3)) # True