Simplify the following text for a Grade 11 native English-speaking person.
Original: Husserl 's formal analysis of language also inspired StanisÅ aw LeÅ niewski and Kazimierz Ajdukiewicz in the development of categorial grammar .
Simplified: StanisÅ aw LeÅ niewski and Kazimierz Ajdukiewicz were inspired by Husserl 's formal analysis of language . Accordingly , they employed phenomenology in the development of categorial grammar .