Commit 01b0e4e

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Added tasks 195-197.

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	`1`	`+# Read from the file file.txt and output the tenth line to stdout.`
	`2`	`+sed -n 10p file.txt`

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	`1`	`+# Write your MySQL query statement below`
	`2`	`+DELETE FROM Person`
	`3`	`+WHERE Id NOT IN (SELECT id FROM (SELECT Email, MIN(Id) AS 'id' FROM Person GROUP BY Email) t)`

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	`1`	`+# Write your MySQL query statement below`
	`2`	`+SELECT SecondDate.id as Id`
	`3`	`+FROM Weather SecondDate JOIN Weather FirstDate`
	`4`	`+ON ADDDATE(FirstDate.recordDate,1) = SecondDate.recordDate`
	`5`	`+AND SecondDate.temperature > FirstDate.temperature;`

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