Give the sequence of S and G boundary sets computed by the CANDIDATE-ELIMINA-
TION algorithm if it is given the sequence of training examples from Table 2.1 in
reverse order. Although the final version space will be the same regardless of the
sequence of examples (why?), the sets S and G computed at intermediate stages
will, of course, depend on this sequence. Can you come up with ideas for ordering
the training examples to minimize the sum of the sizes of these intermediate S and
G sets for the H used in the EnjoySport example?