Question $1\mathrm{.}3.$ Then create a DataFrame called chamber$\_$music that contains all the rows of artpower for events where the 'Category' is 'Chamber Music', and all the rows for events where the 'Category' is 'Chamber Music$*\text{'},$ but no additional rows.In $[]$: grader.check$("$q$1\_3")$

Question $1\mathrm{.}4.$ Suppose you want to extract the day of the week $($e$.$g$.$ Monday$)$ for each event. Write a function called day$\_$of$\_$week that takes as input one entry from the 'Time' column and outputs the three$-$letter abbreviation of the day of the week associated with that entry. For example, the call day$\_$of$\_$week $(\text{'}$FRI $7$:$30$ pm$\text{'})$ should return the string 'FRI'. You can assume that the inputs to your function will always be in the format shown in the 'Time' column of artpower.

In $[]$: def day$\_$of$\_$week$($time$)$:

In $[]$: grader.check$("$q$1\_4")$