On Mothers' Day, 5 children made a gift for their mother, Mrs Tan. They presented Mrs Tan with 5 boxes, one of which contains her gift. The boxes come in their favorite colours and each child wrote a message on the box of their favorite colour:
Green box: Your gift is inside here - Benedict
Blue box: Your gift is not in here - Bob
Red box: Benedict is lying - Brenda
Orange box: Your gift is inside the blue box - Brian
Yellow box: Your gift is inside the red box - Billy
Given that three of the above statements are true, Mrs Tan's gift is in the box belonging to?
Benedict, Bob, Brenda, Brian or Billy?