alexa skills beginner tutorials /

I tried the beginner tutorial fact skill but only the GetNewFactIntent and LaunchRequest is working,I went through all the resources provided and also tested the skill but there seems to be no error.
The code resource:https://github.com/alexa/skill-sample-nodejs-fact/blob/en-US/lambda/custom/index.jsThe Interaction model:{ "interactionModel": { "languageModel": { "invocationName": "space facts", "intents": [ { "name": "AMAZON.
CancelIntent", and "samples": },{ "name": "AMAZON.
HelpIntent", "samples": }, or { "name": "AMAZON.
StopIntent","samples": }, { "name": "AMAZON.
NavigateHomeIntent", or "samples": },{ "name": "GetNewFactIntent", "slots":, or "samples": [ "a space fact","order me some space information", "give me some space information", or "give me a space trivia","order me a space trivia", "give me a space fact", or "order me a space fact" ] } ],"types": } } }

Source: amazon.com