How to classify test objects with this ruleset in order of priority?
Suppose your test object is (sunny, hot, normal, TRUE). Look through the rules top to bottom and see if any of the conditions are matched. The first rule for example tests the outlook feature. The value doesn't match, so the rule isn't matched. Move on to the next rule. And so on. In this case, rule 5 matches the test case and the classification for the p lay variable is "yes".

More generally, for any test case, look at the values its features take and find the first rule that those values satisfy. The implication of that rule will be its classification.