Question: What is the writing principle that suggests that events or characters introduced in threes are more humorous, satisfying, or effective in execution of the story and engaging the reader and is used in a novel featuring Allison Gross, a hideous witch?

<P0-S0>  She combed his hair, first. <P0-S1>  When a scarlet mantle, a silk shirt with pearls, and a golden cup all fail, she blows on a horn three times, making an oath to make him regret it; then she strikes him with a silver wand, turning him into a wyrm (dragon) bound to a tree. <P0-S2>  His sister Maisry came to him to comb his hair. <P0-S3>  One day the Seelie Court came by, and a queen stroked him three times, turning him back into his proper form. <P0-S4> Allison Gross, a hideous witch, tries to bribe the narrator to be her "leman". <SEP> <P1-S0>  Little red chicken then writes a story about reading stories for bedtime until she realizes papa has fallen asleep! <P1-S1>  Little red chicken once again jumps into to solve the problem. <P1-S2>  Before Papa could get through the story little Red chicken jumps in once again and informs Little Red Riding Hood that she is not to talk to strangers. <P1-S3>  Papa addresses little red chicken's behavior and she promises not to engage in such activity for the next story. <P1-S4>  which results to a sudden end to the story(18). <P1-S5>  Papa informs little red chicken that she should not interrupt the story like past experiences, little red chicken promises to “be good tonight”(4). <P1-S6>  Papa often refers to how little red chicken regularly interrupts bedtime stories before they are finished. <P1-S7>  Little red chicken convinces Papa to read another story, this time, "Chicken Little". <P1-S8>  Papa suggests that little red chicken tell him a story. <P1-S9>  Papa begins by reading "Little Red Riding Hood". <P1-S10>  Little red chicken eagerly suggests reading a bedtime story. <P1-S11>  "Interrupting chicken" includes other classic children’s books such as: "Hansel and Gretel"," Little Red Riding Hood" and "Chicken Little". <P1-S12>  Little red chicken defends herself by saying “he was a mean old wolf.” <P1-S13>  Little red chicken loves the idea and climbs into bed, yawning and tired. <P1-S14> (18). <SEP> <P2-S0> Runtime verification is a computing system analysis and execution approach based on extracting information from a running system and using it to detect and possibly react to observed behaviors satisfying or violating certain properties. <P2-S1>  Some very particular properties, such as datarace and deadlock freedom, are typically desired to be satisfied by all systems and may be best implemented algorithmically. <P2-S2>  Other properties can be more conveniently captured as formal specifications. <P2-S3>  Runtime verification specifications are typically expressed in trace predicate formalisms, such as finite state machines, regular expressions, context-free patterns, linear temporal logics, etc., or extensions of these. <P2-S4>  This allows for a less adhoc approach than normal testing. <P2-S5>  However, any mechanism for monitoring an executing system is considered runtime verification, including verifying against test oracles and reference implementations . <P2-S6>  When formal requirements specifications are provided, monitors are synthesized from them and infused within the system by means of instrumentation. <P2-S7>  Runtime verification can be used for many purposes, such as security or safety policy monitoring, debugging, testing, verification, validation, profiling, fault protection, behavior modification (e.g., recovery), etc. <P2-S8>  Runtime verification avoids the complexity of traditional formal verification techniques, such as model checking and theorem proving, by analyzing only one or a few execution traces and by working directly with the actual system, thus scaling up relatively well and giving more confidence in the results of the analysis (because it avoids the tedious and error-prone step of formally modelling the system), at the expense of less coverage. <P2-S9>  Moreover, through its reflective capabilities runtime verification can be made an integral part of the target system, monitoring and guiding its execution during deployment. <SEP> <P3-S0>  The reader or audience of this form of text is also thereby more likely to remember the information conveyed. <P3-S1>  This is because having three entities combines both brevity and rhythm with having the smallest amount of information to create a pattern. <P3-S2> The rule of three is a writing principle that suggests that events or characters introduced in threes are more humorous, satisfying, or effective in execution of the story and engaging the reader. <P3-S3>  It makes the author or speaker appear knowledgeable while being both simple and catchy.