With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Delta Air Lines' headquarters are located in Georgia.
text_B: In mathematical modeling , deterministic simulations contain no random variables and no degree of randomness , and consist mostly of equations , for example difference equations .. mathematical modeling. mathematical modeling. randomness. randomness. variables. Variable ( mathematics ). These simulations have known inputs and they results in a unique set of outputs .. Contrast stochastic -LRB- probability -RRB- simulation , which includes random variables .. simulation. simulation. variables. Variable ( mathematics ). Deterministic simulation models are usually designed to capture some underlying mechanism or natural process .. simulation. simulation. mechanism. Mechanism ( philosophy ). They are different from statistical models -LRB- for example linear regression -RRB- whose aim is to empirically estimate the relationships between variables .. variables. Variable ( mathematics ). The deterministic model is viewed as a useful approximation of reality that is easier to build and interpret than a stochastic model .. However , such models can be extremely complicated with large numbers of inputs and outputs , and therefore are often noninvertible ; a fixed single set of outputs can be generated by multiple sets of inputs .. Thus taking reliable account of parameter and model uncertainty is crucial , perhaps even more so than for standard statistical models , yet this is an area that has received little attention from statisticians .
not_related.