Ah that is a beautiful BIRT Challenge! Give it a chance 
I make you an example.
First the workflow looks like this, easy
(or you need a list of sentences, this is what I did with the Cell Splitter and Ungroup afterwards make sure your columns are nicely named with the Column Rename )
Than go to BIRT
Drag and Drop the Table into the BIRT Report
Select the Row in the table (You can see this in the Breadcrump) And choose under PageBreak in the Propery Editor “Always”
Than generate it as a powerpoint:
And (small taddaaa :)) one page per sentence.
Small commercial comment: With the KNIME Server you can now have sent this to yourselve via email daily/hourly or just every few minutes.
I uploaded the workflow to my KNIME Hub Space https://hub.knime.com/iris/spaces/Public/latest/ExamplesForTheForum/OnePagePerLine
PS: Btw. here you can find how I generate the node links to the KNIME Hub : Search and link KNIME Hub directly from your forum post!