Where was d: 25~70nm, l: 10~20 μm geometry researched?
CREATE TABLE table_30057479_1 (researched_at VARCHAR, geometry VARCHAR)
SELECT researched_at FROM table_30057479_1 WHERE geometry = "D: 25~70nm, L: 10~20 μm"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_30057479_1 (researched_at VARCHAR, geometry VARCHAR) Question: Where was d: 25~70nm, l: 10~20 μm geometry researched? [/INST] SELECT researched_at FROM table_30057479_1 WHERE geometry = "D: 25~70nm, L: 10~20 μm" </s>