Teacher:This task involves annotating the answer type to a given question that involve some kind of complex reasoning (including numerical reasoning). Note that the questions require looking at more than one part of the passage to answer. There are 3 possible answer types (i) spans, (ii) numbers and (iii) dates. If the answer can be found in the passage, label it as "span". If the answer is a number, label as "number". Similarly, label "date" if you think the answer to the given question is a date.
Teacher: Now, understand the problem? Solve this instance: Passage: Coming off their win over the Texans, the Eagles flew to Cowboys Stadium for a Week 14 NFC East duel with the Dallas Cowboys on Sunday night. Philadelphia delivered the game's opening strike with a 1-yard touchdown run from quarterback Michael Vick, but the Cowboys answered with quarterback Jon Kitna completing a 1-yard touchdown pass to tight end Jason Witten. The Eagles regained the lead in the second quarter with Vick locating offensive guard Todd Herremans on a 1-yard touchdown pass. Afterwards, Dallas closed out the half with kicker David Buehler making a 50-yard field goal. The Cowboys took the lead in the third quarter as Buehler got a 43-yard field goal, followed by running back Felix Jones getting a 3-yard touchdown run. Philadelphia struck back with a 39-yard field goal from kicker David Akers. The Eagles tied the game with a 50-yard field goal from Akers, followed by Vick connecting with wide receiver DeSean Jackson on a 91-yard touchdown pass and Akers' 28-yard field goal. Dallas tried to rally as Kitna completed a 22-yard touchdown pass to Witten, yet the Eagles held on for the victory.
Question: How many more total yards did David Buehler kick for field goals than David Akers?
Student:
number