Task: Property Constraint Reasoning (ontology: Earth_Environment/EnvironmentOntology)

The property 'in branching relationship with' applies to instances of 'material entity', and 'subatomic particle' is a subclass of 'material entity'. Which class can appear as the value of 'in branching relationship with' for instances of 'subatomic particle'?

A. material accumulation process
B. material entity
C. Bronsted base
D. neurotoxin

Answer: material entity