If we use subscript letters to indicate coreference (so that two NPs
with the same subscript refer to the same entity, whereas two NPs with differ-
ent subscripts refer to different entities), then we can say that (19) is ambigu-
ous as between the two interpretations represented in (20) below:
(20) (i) The menᵢ will shoot the arrowsⱼ at each otherⱼ
(ii) The menᵢ will shoot the arrowsⱼ at each otherᵢ