Task: Pos Tagging
Input (English): Sentence: OSU forestry professors William Ripple and Robert Beschta have found that wolves actually promote stream {{ - }} bank stabilization , although they have given the phenomenon the unfortunate name of " the ecology of fear " -- something that smacks of the horrible PR resulting from the wolf 's relationships with Riding Hood and the Three Pigs . 
Word: -
Output (English): HYPH