Draw a E R Diagram with relationship

Question 1. A college contains many departments which can offer any number of courses. Many instructors can work in a department and an instructor can work only in one department. For each department, there is a Head. An instructor can be the head of only one department. Each instructor can take any number of courses, but the course can be taken by only one instructor. A student can enroll in any number of courses and each course can have any number of students ( 2 points)