```
Line <- c(seq(from = 1, length.out = 9, by = 421), 4211)
Text <- c(rep(string, length.out = 9), "Plate 3")

df <- data.frame(Line = Line,
                 Text = Text )
```

```

my_df <- data.frame(Line = c(2527, 2948, 3369),
                    Text = c("Plate 1", "Plate 2", "Plate 3"))
```

```
df %>% group_by(Text) %>% slice(unique(last(n())))
```