if something undergoes physical static then the physical rna of that something will remain unchanged
precursor_mrna is rna. precursor_mrna is not rna. transfer_rna is rna. rna_molecules_production is physical_creation_event. rna_enzyme is tangible_thing. memory_rna is not rna. memory_rna is rna. rna_enzyme is not tangible_thing. rna_molecules_production is not physical_creation_event. transfer_rna is not rna.