Find the equivalent of the following expression according to the rules? 1. name,title(deptname= "Music" (instructor (teaches \( \bowtie \Pi_{\text {course_id, title }} \) (course)))) 2. (r1r2)r3 \( \Pi_{\text {name, title }}\left(\sigma_{\text {dept_ }} ight. \) name = "Music" year=2009 3. (instructor (teaches \( \bowtie \Pi_{\text {course_id, title }} \) (course)))) 4. \[ \left.\sigma_{\text {dept_name }}=\text { "Music" }(\text { instructor }) \Phi_{\text {year }}=2009 \text { (teaches } ight) \] 5. ( \( \sigma_{\text {dept_name }}= \) "Music" (instructor Meaches ) )