'********** analogy 'If robin is a type of bird then robin is a type of animal. < bird> ==> animal>>. 'Usually, robin is a type of bird if and only if robin can fly. < bird> <=> [flying]>>. %0.80% 14 'If robin can fly then probably robin is a type of animal. ''outputMustContain('< [flying]> ==> animal>>. %0.80;0.65%')