When did Abigail Adams marry John Adams and when did they divorce
SELECT ?value1 ?value2 WHERE { wd:Q206191 p:P26 ?s . ?s ps:P26 wd:Q11806 . ?s pq:P580 ?value1 . ?s pq:P582 ?value2 }
abigail adams: Q206191 john adams: Q11806