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/**
 * Person Definition
 */
var Person = function() {};

Person.prototype.setName = function(name) {
    this.name = name;
    return this;
}

Person.prototype.getName = function() {
    return this.name;
}

/**
 * RaceCarDriver Definition
 */

var RaceCarDriver = function() {};

// set prototype to parent
RaceCarDriver.prototype = new Person();

RaceCarDriver.prototype.setSponsor = function(sponsor) {
    this.sponsor = sponsor;
    return this;
}

RaceCarDriver.prototype.getSponsor = function() {
    return this.sponsor;
}

RaceCarDriver.prototype.getDriverInfo = function() {
    return this.getName() + ' drives the ' + this.getSponsor() + ' car.';
}
    
/**
 * Application Code
 */
var joe = new RaceCarDriver();
joe.setName('Joseph').setSponsor('Tide');

var output = joe.getDriverInfo();
console.log(output);