This relation occurs only between two Component frames of a single Complex frame, i.e. as extra information associated with a set of Subframe relations. It specifies the sequence of states and events that are definitional for a certain state-of-affairs. Most Subframe relations will naturally have precedence relations, as can be seen in the foregoing diagram of the subframes of the Criminal process frame, in which the Precedes relations are indicated by the black lateral arrows. This is the only frame relation for which cycles are allowed. For example, in the subframes of the Sleep wake cycle frame, Being awake precedes Fall asleep, which precedes Sleep, which precedes Waking up or Getting up, which in turn precedes the first frame, Being awake. xsd:string