Write the next sentence in the following story.

How to draw a horse's blood
Prepare the horse.
Make sure that the horse is properly restrained and is in a docile temperament before proceeding to take a blood sample. For blood collection, using a halter and rope is sufficient.
Ask someone to assist you in restraining the horse by holding the part of the rope attached to the tie ring. Using gauze soaked in alcohol, wipe the jugular furrow of the horse.