I have a string that looks like this. Thi string is taken from a file where each of the keys are in different lines.

```
languagesKnown = 'Mother-Tongue : Spanish OtherLanguages: English Major: German' 

```

It can also look like

```
languagesKnown = 'Mother-Tongue:   OtherLanguages: English Major: German' 

```

I want to check which value is set to Mother-Tongue.

`content:string[] = languagesKnown..split('\n')`

gives me a string array, But I want to see if something is set to it or if it is empty like above.