Assertion: tower's number | /r/RelatedTo | land fertility
Facets:
value: directly
type: MANNER
Source sentences:
text: The constant need for the patriarchs to travel to Egypt in time of famine (i.e., when there is not enough food to meet subsistence level requirements) likewise demonstrates what to them was a fact of life: the number of people that can reside in any given area is directly related to the climatic conditions and land fertility.