使用换行符分隔符解析字符串，然后分配给变量

I am trying to parse serial input into sentences, then assign those sentences to a variable. Here is an example of what I am trying to do. My serial port currently outputs this:

This is the first sentence. 
This is the second sentence. 
This is the third sentence. 

I read this in and print it by using:

scanner := bufio.NewScanner(port)
    for scanner.Scan() {
        fmt.Println(scanner.Text())
        }

What I would like to do is I want to assign each sentence to a new variable. I want to later do something like this (example):

fmt.Printf("First sentence: %q
", firstSen)
fmt.Printf("Second sentence: %q
", secondSen)
fmt.Printf("Third sentence: %q
", thirdSen)

And it should output:

First sentence: This is the first sentence. 
Second sentence: This is the second sentence. 
Third sentence: This is the third sentence.

How can do I go about doing this? Thank you.

Collect the lines from the input:

var lines []string
scanner := bufio.NewScanner(port)
for scanner.Scan() {
    lines = append(lines, scanner.Text())
}
if err := scanner.Err(); err != nil {
    // handle error
}

Loop through variables assigning a line to the variable:

var firstSen, secondSen, thirdSen string
for i, s := range []*string{&firstSen, &secondSen, &thirdSen} {
    if i >= len(lines) {
        break
    }
    *s = lines[i]
}

Print as shown in the question:

fmt.Printf("First sentence: %q
", firstSen)
fmt.Printf("Second sentence: %q
", secondSen)
fmt.Printf("Third sentence: %q
", thirdSen)

Depending on your requirements, you can drop the variables and use the slice of lines directly:

fmt.Printf("First sentence: %q
", line[0])
fmt.Printf("Second sentence: %q
", line[1])
fmt.Printf("Third sentence: %q
", line[2])