'********** comparison 'If robin is a type of bird then robin is a type of animal. < bird> ==> animal>>. 'If robin is a type of bird then robin can fly. < bird> ==> [flying]>>. %0.80% 14 'I guess robin is a type of animal if and only if robin can fly. ''outputMustContain('< [flying]> <=> animal>>. %0.80;0.45%')