How can I get the value (object) of a Resource's property?

[Dmitri Pisarenko]

Hello!

I have the following code, in which I find a resource by its e-mail.

        val varn = "x"
        val query = createQuery("""SELECT ?${varn}
                                                WHERE { ?x  
<http://www.w3.org/2001/vcard-rdf/3.0#EMAIL>  "${email}" }""")
        val qexec = createQueryExecution(ds, query)
        val rs = qexec.execSelect()
        if (rs.hasNext()) {
                val solution = rs.nextSolution()
                val rec = solution[varn]
                // Here I need to find the value of the property 
FirstContactTime
        }

Now I want to find out whether `rec` has a property `FirstContactTime` and if 
yes, its value.

I tried 
`rec.model.listObjectsOfProperty(ds.defaultModel.createProperty(FirstContactTime))`
 but it doesn't return anything. The debugger says `rec` does have a property 
`FirstContactTime`.

How can I get the value of `FirstContactTime` (`2017-03-03T10:35:00Z`) in my 
code?

Thanks in advance

Dmitri Pisarenko