SQL & PL/SQL :: Select Only Rows Where Certain Column Repeating Values

I am trying to come up with a sql select statement that provides all rows for employees with 2 or more cities.

with sample_table as (
select 'John' name,'city' ValueType,'Toronto' Value from dual union all
select 'John' name,'city' ValueType,'Vancouver' Value from dual union all
select 'Susan' name,'city' ValueType,'Toronto' Value from dual union all
select 'Susan' name,'city' ValueType,'Seattle' Value from dual union all
select 'Susan' name,'age' ValueType,30 Value from dual union all
select 'Susan' name,'city' ValueType,'Atlanta' Value from dual union all

[Code]...

NAME VALUETYPE VALUE
----------- ------------- ------------
John City Toronto
John City Vancouver
Susan City Toronto
Susan City Seattle
Susan Age 30
Susan City Atlanta
David City Chicago
David age 35
David Status married
David City Dallas

The above code is just to describe the sample table and the desired result set. Please note that Mary is not on the result set since she has no city assigned to her. Also Julia is not on the result set since she only has one city assigned to her. The others are there because they had at least 2 cities assigned to them.

I need the sql syntax that would return this result set.