Complex sentence: After Eric Schlosser finished writing "Fast Food Nation", reporters kept asking him about Upton Sinclair, and although he had read Sinclair's "The Jungle", he did not know about his other works or anything about Sinclair himself.
Split into simpler sentences: After Eric Schlosser finished writing "Fast Food Nation", reporters kept asking him about Upton Sinclair. Although he had read Sinclair's "The Jungle", he did not know about his other works or anything about Sinclair himself.