Below I will provide terminologies, instructions, and an input to summarize log data for a user's interaction with a search engine.

### Terminologies
In this log data, the session data has 6 columns, and they are the following: 

1. User: This is the user ID.
2. Task: This is the task ID i.e., the task the user is working on. 
3. Timestamp: This is the timestamp for when an action took place in unixtime. 
4. LastQuery: In each session, the user issues a query and looks over the results to see if they have found relevant information. LastQuery refers to last query issued by the user, and the actions are occuring in that context. 
5. Action: This is the user's current action that they are performing. The user can perform the following set of actions: 

* BEGIN_SEARCH: This represents the beginning of the session with a search query.
* MOUSE_MOVE: This action represents a mouse movement action the user performed on the webpage.
* QUERY_REFORM: This actions corresponds to a query reformulation. Query reformulation mean changing an existing QUERY to a new QUERY.
* CLICK: In this action, the user has clicked on a result that was generated when the user issued a search query. 
* HOVER: In this action, the user has hovered their mouse over one of the search result.
* SCROLL: In this action, the user is scroll their move over the search results. 
* SESSION_SCORE: This represents the end of a search session. The content for this action is the users satisfaction score on their session. The user rates their session out of 5. 5 represents a very satisfied session and 1 represents a very unsatisfied session. 
* QUERY_SCORE: This is the score the user provides to their search query. This score is out of 5. 5 Means the user is very satisfied with their query, and 1 means they are very unsatisfied with their query. 
* RESULT_SCORE: The user also evaluates each search result that they have visited. And this is the relevance score that is given to the result they have clicked on with results to their task and their query. 

6. Content: These are the values associated with the action. Another way to think about it, what is being done in the action is represented here. 

If you understand all these terminologies, say OK.