Is the sentiment accompanying the input text negative?

Text: @user surprise, surprise! Barca has the upperhand, but it seems Malaga has their 12th man, the ref is so bias. #CampNou #FCBMalaga
@user surprise, surprise! Barca has the upperhand, but it seems Malaga has their 12th man, the ref is so bias. #CampNou #FCBMalaga