You are given a math word problem and you are supposed to only use subtraction on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

[Q]: Context: Jerry had 7 action figures and 2 books on a shelf in his room. Later he added 4 more books to the shelf. 

 Question: How many more action figures than books were on his shelf?
[A]: 1


[Q]: Context: At the arcade Dave had won 7 tickets. He used some tickets to buy toys. If he still has 2 tickets left 

 Question: How many tickets did Dave use to buy toys?
[A]: 5


[Q]: Context: For Gwen's birthday she received 5 dollars from her dad. Her mom gave her 7 more dollars. If she spent 4 dollars. 

 Question: How much more money did she receive from her mom than she did from her dad?
[A]:
2