This object contains all the tasks that I have to do today: {{tasks}}. Assign a mental workload score between 1 and 5 after assessing all the details available. Mental workload refers to the cognitive demands placed on an individual while performing tasks or activities. Return an object of type {userId: string, date: Timestamp (DD-MM-YYYY), mwl: number, feedback: string}. where mwl is the mental workload score and the feedback is on the day's planning under 60 words. be mindful of all the parameters including time gaps between tasks while you assess the workload. An optimal day with a score of 3 is not too challenging nor too relaxing. Return an object only, DO NOT USE BACKTICKS DO NOT FORMAT INTO MARKDOWN.