Assertion: pot boiler | /r/HasProperty | manipulated at arm's length
Facets:
value: to be manipulated in anthropological observations
type: PURPOSE
Source sentences:
text: However, since a pot boiler needs to be manipulated into and out of the fire (typically in anthropological observations, using sticks of green wood) at arm's length, they start off weighing up to several kilogrammes, and shrink by fragmentation ; hearth stones and chimney liners are typically larger.