Task: Class Definition Understanding (ontology: Earth_Environment/GeoCoreOntology)

Which of the following definitions best describes 'geological contact'?

A. An object that is 'generated by' some 'geological process' and has at least one part 'constituted by' some 'earth material' that is not an 'earth fluid'.
B. It is a 'relational quality' that 'inheres in' two distinct 'geological object' that are 'externally connected with'
C. It is a natural amount of matter 'generated by' some 'geological process'.
D. It is a fiat surface that is 'located in' the external surface of a 'geological object'.

Answer: It is a 'relational quality' that 'inheres in' two distinct 'geological object' that are 'externally connected with'