12. A computer-readable storage medium storing instructions that, when executed by a computing system, cause the computing system to perform operations for selecting trending action targets matching a query, comprising: receiving a query identifying one or more search actions; identifying, as search criteria, one or more keywords or one or more identifiers for the one or more search actions in the received query; selecting, based on the search criteria, a set of posts relevant to the query, the set of posts comprising one or more action posts that contain at least one sentence that specifies a post action and a post action target; for one or more selected action posts of the one or more action posts: creating a dependency structure for at least one action sentence in the selected action post, wherein the dependency structure correlates a performed action identified in the action sentence with an action target identified in the action sentence, wherein the identification of the performed action comprises a first identifier, within the action sentence, corresponding to the performed action, and wherein the identification of the action target comprises a second identifier, within the action sentence, corresponding to one or more objects of the action sentence; determining, based on the dependency structure, that the selected action post matches the query by determining that at least one of the one or more search actions specified in the query matches the performed action identified in the dependency structure; and in response to determining that the selected action post matches the query, updating a count of action targets that match the query corresponding to the action target identified in the dependency structure; and providing a response to the query that identifies one or more response action targets based on the count for each of the identified one or more response action targets being above a threshold.
12. A computer-readable storage medium storing instructions that, when executed by a computing system, cause the computing system to perform operations for selecting trending action targets matching a query, comprising: receiving a query identifying one or more search actions; identifying, as search criteria, one or more keywords or one or more identifiers for the one or more search actions in the received query; selecting, based on the search criteria, a set of posts relevant to the query, the set of posts comprising one or more action posts that contain at least one sentence that specifies a post action and a post action target; for one or more selected action posts of the one or more action posts: creating a dependency structure for at least one action sentence in the selected action post, wherein the dependency structure correlates a performed action identified in the action sentence with an action target identified in the action sentence, wherein the identification of the performed action comprises a first identifier, within the action sentence, corresponding to the performed action, and wherein the identification of the action target comprises a second identifier, within the action sentence, corresponding to one or more objects of the action sentence; determining, based on the dependency structure, that the selected action post matches the query by determining that at least one of the one or more search actions specified in the query matches the performed action identified in the dependency structure; and in response to determining that the selected action post matches the query, updating a count of action targets that match the query corresponding to the action target identified in the dependency structure; and providing a response to the query that identifies one or more response action targets based on the count for each of the identified one or more response action targets being above a threshold. 17. The computer-readable storage medium of claim 12 wherein: the received query specifies additional information to be gathered in relation to posts matching the one or more search actions; and the response to the query comprises: the additional information specified in the query obtained in relation to each of the selected action posts.