Sentence:  She wiped something with a cloth, wiped at the wall shelf, and put the <WSD>something</WSD> on it, clinking glass. 
Meaning of the word marked with <WSD> tags:  An object whose name is forgotten by, unknown or unimportant to the user, e.g., from words of a song. Also used to refer to an object earlier indefinitely referred to as 'something' (pronoun sense).