Solutions to Chapter 7 Ambiguity

A. The following sentences are ambiguous. Give symbolization keys for each and symbolize the different readings.

1. 1.
   ​

   Haskell is a birder and enjoys watching cranes.

   $B$:

   Haskell is a birder

   $C_1$:

   Haskell enjoys watching cranes (the bird)

   $C_2$:

   Haskell enjoys watching cranes (the construction equipment)

   $B\wedge C_1$
   $B\wedge C_2$

2. 2.
   ​

   The zoo has lions or tigers and bears.

3. $L$:

   The zoo has lions

   $T$:

   The zoo has tigers

   $B$:

   The zoo has bears

   $L\vee (T\wedge B)$
   $(L\vee T)\wedge B$.

4. 3.
   ​

   The flower is not red or fragrant.

5. $R$:

   The flower is red

   $F$:

   The flower is fragrant

6. $\neg (R\vee F)$
   $\neg R\vee F$