Question: What is the most requested item under the resource type "Supplies" for projects whose main subject area is Literacy & Language?
SQL: SELECT T1.item_name FROM resources AS T1 INNER JOIN projects AS T2 ON T1.projectid = T2.projectid WHERE T2.primary_focus_area = 'Literacy & Language' AND T1.project_resource_type = 'Supplies' ORDER BY T1.item_quantity DESC LIMIT 1