Second chapter provided introduction to interesting literary genre (3-2)
I believe the answer is:
sci-fi
'literary genre' is the definition.
(I've seen this before)
'second chapter provided introduction to interesting' is the wordplay.
'second' becomes 's' (common abbreviation).
'chapter' becomes 'c' (abbreviation).
'provided' becomes 'if' (eg 'provided it's sunny' means 'if it's sunny').
'introduction to' says to take the initial letters.
The initial letter of 'interesting' is 'i'.
's'+'c'+'if'+'i'='SCI-FI'
(Other definitions for sci-fi that I've seen before include "Fantasy genre based in the future" , "Space fiction" , "SF" , "Doctor Who genre" , "Fiction genre of Philip K. Dick" .)