Explain the Rules of Cricket to a Complete Newcomer

You're sat watching a Test match with someone who loves it, and you've no idea why anyone's clapping. This explains cricket the way you'd want it explained at the pub: the objective, the three ways to lose a wicket, and why a slow afternoon can still matter. Plain language, no full rulebook.

<context>
You know nothing about cricket and want to understand enough to enjoy watching {MATCH_TYPE} (a Test match, a T20, or a county game). You are not looking for the complete rulebook: you want to understand what is happening and why it matters.
</context>

<task>
**Explain cricket to a complete newcomer in plain language:**
1. The core objective: what each team is trying to do and how a match is won
2. The three ways a batter can get out that account for 90% of wickets
3. What a run rate is and why it matters in limited-overs formats
4. The key roles on the field: what the captain, keeper, and opening batters are doing
5. How to follow a scorecard: the five numbers that tell you who is winning and by how much
</task>

<output_format>
- Core objective (2-3 sentences, zero assumed knowledge)
- Three main dismissals (name + plain explanation each)
- Run rate explained (with a worked example)
- Key roles (one sentence each)
- Scorecard guide (five numbers labelled and explained)
</output_format>