<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def declare(self, name, memory_type='BIT', memory_size=1, shared_region=None, offsets=None):
 """DECLARE a quil variable This adds the declaration to the current program and returns a MemoryReference to the base (offset = 0) of the declared memory. .. note:: This function returns a MemoryReference and cannot be chained like some would like to chain methods, but please be aware that you must create your own MemoryReferences later on. :param name: Name of the declared variable :param memory_type: Type of the declared memory: 'BIT', 'REAL', 'OCTET' or 'INTEGER' :param memory_size: Number of array elements in the declared memory. :param shared_region: You can declare a variable that shares its underlying memory with another region. This allows aliasing. For example, you can interpret an array of measured bits as an integer. :param offsets: If you are using ``shared_region``, this allows you to share only a part of the parent region. The offset is given by an array type and the number of elements of that type. For example, ``DECLARE target-bit BIT SHARING real-region OFFSET 1 REAL 4 BIT`` will let you use target-bit to poke into the fourth bit of the second real from the leading edge of real-region. :return: a MemoryReference to the start of the declared memory region, ie a memory reference to ``name[0]``. """

        self.inst(Declare(name=name, memory_type=memory_type, memory_size=memory_size,
                          shared_region=shared_region, offsets=offsets))
        return MemoryReference(name=name, declared_size=memory_size)