WikipediaSearch.kt

import com.google.gson.*

fun wikipedia(keyword: String): String {
    val url = "https://en.wikipedia.org/w/api.php" +
            "?action=query&format=json&prop=extracts" +
            "&exsectionformat=plain&exsentences=2&explaintext=1" +
            "&titles=$keyword"
    val json = java.net.URL(url).readText()
    val jsonObject = Gson().fromJson<JsonObject>(json, JsonObject::class.java)
    val pages = jsonObject["query"].asJsonObject["pages"].asJsonObject
    val extract = pages[pages.keySet().first()].asJsonObject["extract"]
    return extract.asString
}