I want to know the answer to the following question:
After completing his studies, under whose rule did he become a regular canon?
All the background I'm provided with is that "After he completed his studies, Bishop Martin Bazan and Prior Diego d'Achebes appointed Dominic to the cathedral chapter and he became a regular canon under the Rule of St. Augustine and the Constitutions for the cathedral church of Osma.". Is that enough to answer the question?