How can I extend the below query to also retrieve the stoichiometric factors of all reagents for the given rhea reaction? I see the scheme (slide 12) but I am not quite sure how to access the factors. I currently have:

PREFIX rh:<http://rdf.rhea-db.org/>

SELECT ?reaction ?reactionEquation ?rea_side ?partic ?compi ?chebi_id
WHERE {
      ?reaction rdfs:subClassOf rh:Reaction .
      ?reaction rh:equation ?reactionEquation .
      ?reaction rh:side ?rea_side .

      ?rea_side rh:contains ?partic .
      ?partic rh:compound ?compi .
      ?compi rh:name ?name .
      ?compi rh:chebi ?chebi_id .

  FILTER (?reaction=rh:11932)
}

In addition, is there a way to also retrieve the charge information of the compound?