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//detects if what is at the beginning of a string
function what (string) {
    var matches = string.match(/what (.+)/);
    return matches[1];
}

//unit test for detecting a what function
function testwhat () {
    if (what("what is life?")=="is life?") {
        return true;
    }
    else {
        return false;
    }
}

console.log(testwhat());