'********** composition on both sides of a statement 'Bird is a type of animal. animal>. 'What is the relation between a bird and a plant? <(*,bird,plant) --> ?x>? 6 'The relation between bird and plant is a type of relation between animal and plant. ''outputMustContain('<(*,bird,plant) --> (*,animal,plant)>. %1.00;0.81%')