An other-anaphor is said to be covered by a pattern set, if the anaphor and its antecedent could be hit (i.e., the corresponding query has a non-zero hit number) by at least one pattern in the list.
for example, in "...asthma and other hypereosinophilic diseases", the reference between "other hypereosinophilic diseases" and "asthma" is clear if the inbetween words "and other" are taken into consideration.