{ "fathers" : [ { "id" : 0, "married" : false, "name" : "Gary Johnson", "sons" : null, "daughters" : [ { "age" : 7, "name" : "Laura" }, { "age" : 1, "name" : "Karen" } ] }, { "id" : 1, "married" : true, "name" : "Michael Taylor", "sons" : null, "daughters" : [ { "age" : 13, "name" : "Sandra" }, { "age" : 7, "name" : "Cynthia" }, { "age" : 8, "name" : "Mary" } ] }, { "id" : 2, "married" : false, "name" : "Steven Martin", "sons" : null, "daughters" : [ { "age" : 16, "name" : "Betty" } ] }, { "id" : 3, "married" : true, "name" : "Ronald Gonzalez", "sons" : null, "daughters" : [ ] }, { "id" : 4, "married" : false, "name" : "Paul Taylor", "sons" : null, "daughters" : [ { "age" : 27, "name" : "Laura" } ] }, { "id" : 5, "married" : false, "name" : "Gary Smith", "sons" : null, "daughters" : [ ] } ] }