Task: Question Answering
Input (English): Question: The neurohypophysis: 
 Options:  <1> It is a continuation of the hypothalamus. <2> It presents dual hypothalamic control. <3> It receives hypothalamic hormones via blood. <4> It is irrigated by the portal system hypothalamus pituitary gland. <5> It produces prolactin.
Output (English): 1