Ive this data frame with one colum including names of articles and their spezifikations...

```
# A tibble: 9,168 x 1
ARTICLE
<chr>
1 Article A, size 12, color yellow
2 Article B, size 14, color red
3 Article C, size 16, color yellow
4 Article D, size 08, color yellow
5 Article E, size 08, color yellow
6 Article F, size 12, color green
7 Article G, size 10, color green
8 Article H, size 10, color yellow
9 Article I, size 14, color red
10 Article J, size 14, color blue
# ... with 9,158 more rows
```

...but i want a data frame with a additional column including just the names of the articles without the spezifikations (see below). my question is: how do i match the string so that it ends right before the first comma?

```
# A tibble: 9,168 x 2
ARTICLE NEW
<chr> <chr>
1 Article A, size 12, color yellow Article A
2 Article B, size 14, color red Article B
3 Article C, size 16, color yellow Article C
4 Article D, size 08, color yellow Article D
5 Article E, size 08, color yellow Article E
6 Article F, size 12, color green Article F
7 Article G, size 10, color green Article G
8 Article H, size 10, color yellow Article H
9 Article I, size 14, color red Article I
10 Article J, size 14, color blue Article J
# ... with 9,158 more rows
```