With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: The ancient Mesopotamians also performed magical rituals to purify themselves of sins committed unknowingly. One such ritual was known as the Šurpu, or "Burning", in which the caster of the spell would transfer the guilt for all their misdeeds onto various objects such as a strip of dates, an onion, and a tuft of wool. The person would then burn the objects and thereby purify themself of all sins that they might have unknowingly committed. A whole genre of love spells existed. Such spells were believed to cause a person to fall in love with another person, restore love which had faded, or cause a male sexual partner to be unable to sustain an erection when he had previously been virile. Other spells were used to reconcile a man with his patron deity or to reconcile a wife with a husband who had been neglecting her.
text_B: Does the spell affecting men's sexual experiences prevent them from having sex?
YES.