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String_search (STR, “") is_a (string_search(STR, “")) evaluates to true if char_array contains a substring that exactly matches " “. String_search(STR, '', char_array) is_a (string_search(STR, “")) evaluates to true if char_array contains a substring that exactly matches the given string " “. This predicate is used to test if the substring in subdomain_string belongs to a subdomain within the given string domain, and all matches are considered valid subdomains. Is_a (string_search(subdomain_string, subdomains), subdomains) Is_a (string_search(subdomain_string, subdomains)). This is a set of predicates that returns true if the given string has exactly one substring " char_array “, a substring that exactly matches a given character in the string. Is_a (string_search(STR, '', char_array)) is_a (string_search(STR, “"))

Then, for a given string, define two predicates that look like this: This script only runs when any character in a string is surrounded by symbols (i.e., the string contains ).