Can anyone give me some examples of this rule of inference

Question

This is the rule, and I'm not sure about the case yet. I would like to see some text examples.

$p \lor q$

$p\rightarrow r$

$q \rightarrow r$

---

$r$

Answer 1

You are given:

1. the sky is red or the ocean is yellow
2. if the sky is red then crocodiles are mammals
3. if the ocean is yellow then crocodiles are mammals

From these three you conclude that crocodiles are mammals

Makes sense?