An Example of Explanation Generation: The KNIGHT System (J. Lester and B. Porter, Developing and Empirically Evaluating Robust Explanation Generators, Computational Linguistics Journal, 23(1), 1997.)
Q: What happens during embryo sac formation?
A: Embryo sac formation is a kind of female gametophyte formation. During embryo sac formation, the embryo sac is formed from the megaspore mother cell. Embryo sac formation occurs in the ovule.
Embryo sac formation is a step of angiosperm sexual reproduction. It consists of megasporogenesis and embryo sac generation. During megasporogenesis, the megaspore mother cell divides in the nucellus to form 4 megaspores. During embryo sac generation, the embryo sac is generated from the megaspore.