Sentence:  <WSD>Pecha Kucha</WSD> is based on a simple idea: that by limiting the number of slides in a presentation, and limiting the amount of time a presenter can spend on each slide, presentations will convey information concisely and at a rapid pace. 
Meaning of the word marked with <WSD> tags:  A rigid presentation format in which the speaker has exactly 20 slides to speak about, with exactly 20 seconds allocated for each slide.