Two children are sitting side by side and looking at books .
Two children are sitting and looking at books .
Two children are sitting side by side and looking at books.
Two children are sitting and looking at books.
Two children are sitting side by side and looking at books is a rephrasing of Two children are sitting and looking at books.
Two children are sitting side by side and looking at books is a rephrasing of Two children are sitting and looking at books .