data/related_subjects.json

{
  "chemistry": ["other", "science", "physics"],
  "contemporary_world": ["other", "history"],
  "english": ["other"],
  "financial_ed": ["other"],
  "french": ["other"],
  "geography": ["other"],
  "history": ["other", "contemporary_world"],
  "math": ["other", "physics"],
  "other": [
    "chemistry",
    "contemporary_world",
    "english",
    "financial_ed",
    "french",
    "geography",
    "history",
    "math",
    "physics",
    "science"
  ],
  "physics": ["other", "science", "math", "chemistry"],
  "science": ["other", "chemistry", "physics"]
}