Task: Pos Tagging
Input (English): Sentence: Therefore , if the sense of touch is functioning normally and there is a complete absence of spatial awareness in a psychically-blind person {{ when }} the eyes are closed and an object is handled , the conclusion seems unavoidable that touch by itself cannot focus and take possession of the third-dimensionality of things and that actual sight or visual representations are necessary . 
Word: when
Output (English): ADV