The first answer that came to my mind was "yes" – simply because "yes" was given as the right answer. I've been trying to work back from there for the last half hour and still I don't get it.

The fact that George is identified as "married" is a red herring.He isn't identified as "looking" at anybody and he can't therefore , from the information supplied, be determined as a married person looking at an unmarried person.

There are only two people positively identified as being "lookers"– Jack and Anne .It is only one of these two that could therefore be a married person looking at an unmarried person .

One of these two "lookers" is identified as being married - Jack. He is looking at Anne whose marital status is not mentioned.

Until we know whether or not Anne is married we can't determine whether or not the married Jack is looking at a married woman or an unmarried one .