The in
and not in
operators can also check membership in a set or frozen set.
Like the more usual relational operators, in
and not in
can be used in compound relational
expressions. For example, 'a' in 'alpha' in {'alpha', 'bravo'}
is true because
'a' in 'alpha'
and 'alpha' in {'alpha', 'bravo'}
are both true.
Fill in the placeholders so that the actual outputs match the expected outputs.