Various technologies described herein pertain to controlling execution of an automated search task on search results returned by a search engine. The search results are received, where the search results are returned by the search engine responsive to the search engine receiving a seed query. An instantiation of a parameterized query for the automated search task is executed over documents specified by the search results, where the instantiation of the parameterized query describes a linguistic pattern, a structural pattern, and a visual pattern. Further, a set of answer strings is extracted from the documents. The answer strings in the set match the linguistic pattern, the structural pattern, and the visual pattern. The search engine is controlled to provide an output in response to the user search query, the output being based on the set of answer strings extracted from the documents.