Assertion: spider's pair | /r/HasProperty | head
Facets:
Source sentences:
text: A: head; B: thorax; C: abdomen 1: proboscis; 2: chelifores; 3: palps; 4: ovigers; 5: egg sacs; 6a–6d: four pairs of legs Anatomy of a pycnogonid:: head;: thorax;