New York Giants
Pre-Super Bowl NFL championships
Table:
Year

Coach

Location

Opponent

Score

Record

1927
Earl Potteiger
N/A
N/A
N/A
11–1–1

1934
Steve Owen
New York, NY
Chicago Bears
30–13
8–5

1938
Steve Owen
New York, NY
Green Bay Packers
23–17
8–2–1

1956
Jim Lee Howell
Bronx, NY
Chicago Bears
47–7
8–3–1

Total NFL championships won:

4

Considering the following table concerning 'New York Giants' (see 'Pre-Super Bowl NFL championships'), formulate a single-sentence overview of the highlighted cells and return it as JSON: {"answer": "YOUR ANSWER"}.