Recurrences take place due to ascertainable circumstances and chains of causality. Secondly, there is a general principle that there must be ascertainable beneficiaries. However, the date of her death is not ascertainable with any certainty. True progress is dependent upon purity of motive, and conquest of known or ascertainable defects. Neither the origin nor the meaning of Kriens is clearly ascertainable. A has one child, B, so B has a vested remainder because B is ascertainable. Circumstances leading to the foundation of the Gingee governorship are also not ascertainable. The IEM features few object classes, is ascertainable easily understandable and fast. However, there had been no ascertainable trend in the amount of writedowns taken. The initial promise has no ascertainable fair market value, so the transaction was not closed. As far as is ascertainable, its adjective form, "chinky," first appeared in print in 1878. Furthermore, nothing was truly paid, a fact ascertainable on further investigation. The date of these events is exactly ascertainable. There was, then, no single period ascertainable through observations of the solar surface. That is the only ascertainable information about Adalhelm himself.