Task: Property Constraint Reasoning (ontology: Sciences/Biology)

The property 'attached to part of' applies to instances of 'anatomical structure', and 'cell group' is a subclass of 'anatomical structure'. Which class can appear as the value of 'attached to part of' for instances of 'cell group'?

A. anatomical structure
B. detection of chemical stimulus
C. alpha-amino-acid residue anion
D. glycolipid binding

Answer: anatomical structure