1. A memory resource storing instructions that when executed cause a processing resource to implement a system, the instructions comprising: a communication module, to obtain data indicative of a word or phrase communicated during a meeting including a plurality of participants; an association module to, for each participant, identify records electronically accessible to the participant, and associate each record with a tier from a hierarchy of record-relevancy tiers, wherein each tier is indicative of a relevance to the meeting; a search module to identify a set of explanations for the communication and associated scores, including for each participant, beginning with a most relevant tier, search the records accessible to the participant tier by tier until an explanation is identified, and responsive to identification of the explanation assign a score to the explanation according to the tier associated with the record in which the explanation is found; and a preferred explanation module to determine a preferred explanation for the communication based upon the scores, and to cause a display of the preferred explanation.