File1 (parent)

```
2210 1110 Earth
2211 1111 Marse
2212 1112 Saturn
2213 1113 Pluto

```

File2 (child)

```
3310 2210 Earth
3311 2210 Space
3312 2211 Mars
3313 2211 Space
3314 2212 Saturn
3315 2212 Space
3316 2213 Pluto
3317 2213 Space

```

DESIRED

```
3310 2210 Earth
3311 2210 Earth
3312 2211 Mars
3313 2211 Mars
3314 2212 Saturn
3315 2212 Saturn
3316 2213 Pluto
3317 2213 Pluto

```

so it should compare $2 of file2 with $1 of file1, then set value of $3 in file2 same as $3 from file2