In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.

Ex Input:
Question: What is the relationship between turbidimetry and nephelometry?
Options: <1> Nephelometry is the inverse of turbidimetry. <2> Turbidimetry is more sensitive than nephelometry. <3> Nephelometry can be measured with a conventional spectrophotometer. <4> Both technologies measure the dispersion of light. <5> Both technologies are the most sensitive and used in clinical laboratories.

Ex Output:
4

Ex Input:
Question: Prosopagnosia is defined as:
Options: <1> Extreme form of agnosia characterized by the inability to recognize familiar faces. <2> Failure to recognize objects by touch. <3> Loss of ability to visualize images. <4> Form of anosognosia in which the patient denies his blindness. <5> Perceptive experience of an amputated limb.

Ex Output:
1

Ex Input:
Question: The human papilloma virus (HPV) is involved in the pathogenesis of:
Options: <1> Cervical cancer <2> Endometrial cancer. <3> Ovarian cancer. <4> Breast cancer <5> Burkitt lymphoma.

Ex Output:
1