Write a function called 'return_list' that takes a string as a parameter and returns a list of words in the string. "Words" are entities that are seperated by either commas (',') or spaces (' '). In case the string contains neither commas nor spaces, the string will be returned without any manipulation. Note: We are not testing for the case where both commas and spaces are present in the string so feel free to ignore that.

The use of phrases, fragments, and punctuation can influence the mood of a passage; keeping this in mind, how would you describe the mood of the followingpassage? "fog on the essex marshes, fog on the kentish heights, fog creeping into the cabooses of collier-brigs; fog lying out on the yards, and hovering in the riggingof great ships; fog drooping on the gunwales of barges and small boats. fog in the eyes and throats of ancient greenwich pensioners, wheezing by thefiresides of their wards; fog in the stem and bowl of the afternoon pipe of the wrathful skipper; fog cruelly pinching the toes and fingers of his shivering little'prentice boy on deck." (5 points)