$($a$)$ Translate the following query into English and give the answer returned from

the query based on the data in the tables above:

$\{$n$1|$w$($Team$($n$1,$ w$)$x$$y$$z$($PlayoffGame$($x$,$ y$,$ z$)$

$->$ x $=$ n$1$ y $=$ n$1$ z $=$ n$1))\}$

$($b$)$ Express a FOL statement for the constraint that every team in the

PlayoffGame table must be a listed team name in the Team table.

$($c$)$ Give a query that returns team names of playoff game winners with the least

points in the league. In other words, we want all those who won a playoff

game but have the least points within the set of all playoff winners.

You may use the binary predicates $<,>,$ or $=$ in your solution.

Your query should still work even if we add more rows to any table.