$2)$ Retrieve the text of each post that has been posted by any person who is enrolled at UTD $($school$).$

$3)$ Retrieve the names of all the friends of the user $$John Smith$.$

$4)$ Retrieve the name of each user if he$/$she has posted any text that talks about $$UTD$.$

$5)$ Retrieve the name of user who does not have any post.

$6)$ Retrieve the name of each user and the number of friends he$/$she has.

$7)$ Retrieve the name$($s$)$ of the user$($s$)$ who has the maximum number of posts.

$8)$ Remove every fact that indicates that the user with the name $$John Smith$$ likes posts that were posted by the user whose name is $$Tom Harper$.$

$9)$ Increase the rating by $1$ for every post that has been posted by any user whose age is more than $80.$