"is the sky blue" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase",
        "head": "is the sky blue?"
      },
      "expansion": "is the sky blue?",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "name": "English rhetorical questions",
          "parents": [
            "Rhetorical questions",
            "Idioms",
            "Questions",
            "Sentences",
            "Figures of speech",
            "Terms by semantic function",
            "Rhetoric",
            "Language",
            "Communication",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A rhetorical question in response to a question to which the answer is an emphatic yes."
      ],
      "id": "en-is_the_sky_blue-en-phrase-tISgM51-",
      "links": [
        [
          "rhetorical question",
          "rhetorical question#English"
        ],
        [
          "emphatic",
          "emphatic#English"
        ],
        [
          "yes",
          "yes#English"
        ]
      ],
      "raw_glosses": [
        "(colloquial, rhetorical question) A rhetorical question in response to a question to which the answer is an emphatic yes."
      ],
      "synonyms": [
        {
          "word": "does a bear poop in the woods?"
        },
        {
          "word": "yes"
        },
        {
          "word": "affirmative"
        },
        {
          "word": "do fish swim?"
        },
        {
          "word": "is the Pope Catholic?"
        },
        {
          "word": "is water wet?"
        },
        {
          "word": "is snow white?"
        },
        {
          "word": "does Dolly Parton sleep on her back?"
        }
      ],
      "tags": [
        "colloquial",
        "rhetoric"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɪz ðə skaɪ blu/",
      "tags": [
        "General-American"
      ]
    },
    {
      "ipa": "/ɪz ðə skaɪ bluː/",
      "tags": [
        "Received-Pronunciation"
      ]
    }
  ],
  "word": "is the sky blue"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase",
        "head": "is the sky blue?"
      },
      "expansion": "is the sky blue?",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "English colloquialisms",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English phrases",
        "English rhetorical questions",
        "English terms with IPA pronunciation"
      ],
      "glosses": [
        "A rhetorical question in response to a question to which the answer is an emphatic yes."
      ],
      "links": [
        [
          "rhetorical question",
          "rhetorical question#English"
        ],
        [
          "emphatic",
          "emphatic#English"
        ],
        [
          "yes",
          "yes#English"
        ]
      ],
      "raw_glosses": [
        "(colloquial, rhetorical question) A rhetorical question in response to a question to which the answer is an emphatic yes."
      ],
      "tags": [
        "colloquial",
        "rhetoric"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɪz ðə skaɪ blu/",
      "tags": [
        "General-American"
      ]
    },
    {
      "ipa": "/ɪz ðə skaɪ bluː/",
      "tags": [
        "Received-Pronunciation"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "does a bear poop in the woods?"
    },
    {
      "word": "yes"
    },
    {
      "word": "affirmative"
    },
    {
      "word": "do fish swim?"
    },
    {
      "word": "is the Pope Catholic?"
    },
    {
      "word": "is water wet?"
    },
    {
      "word": "is snow white?"
    },
    {
      "word": "does Dolly Parton sleep on her back?"
    }
  ],
  "word": "is the sky blue"
}