Sentence:  Although the play does show a certain structural amateurishness ( there are eleven acts varying in length from twenty-five seconds to an <WSD>hour</WSD> and a half ) , the statement it makes concerning the ceaseless yearning and searching of youth is profound and worthy of our attention . 
Meaning of the word marked with <WSD> tags:  a period of time equal to 1/24th of a day