Sentence:  It was Villa, however, who posted the next moment of danger with another long-range effort from Young, forcing Hart - who had been a <WSD>mixed bag</WSD> throughout - to dive low to his right to save as Houllier's side continued to perform in a most encouraging fashion 
Meaning of the word marked with <WSD> tags:  something tending to have both good and bad results or characteristics; something having a mixture of advantages and disadvantages.