Instruct: Classify Amazon reviews into positive or negative sentiment
Query: draw backs

in order to get the vacuum to work you need to press lightly the place where it say s to press. Sometimes it does not vacuum well and need to do again. it just takes a while to get use to but it does work and the vacuum is very strong so anything other than food,eg, paper will shribble up, you need to add a firm backing for it not to curl up.