    Sentence ‘1: \Then,: too, thére have beeh  the. campaigners who, have gone. to, what  some" regard :as oppésite: if the head of a  committee’ is. ktiown. to be a man or a  woman, then .chairiman ‘or’ ‘chairwoman. must  surely be. the: ‘proper denotation; if the  sex. of the -person: is ‘not“known, then  chairperson’; though awkward-Sounding, is  the preferred form.    Sentence: 2: The gender of ‘thé ‘person in.  question will: determine. _ the’ proper  denotation.