Find the equivalent of the following expression according to the rules? 1. name,titel(deptname= Music" (instructor D (teaches \( \bowtie \Pi_{\text {course_id, ttte (course)))) }} \) 2. (r1r2)r3 \( \Pi_{\text {name, titel }}\left(\sigma_{\text {dept_ } \text { name }}= ight. \) 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. ( deptname= "Music" (instructor teaches))