Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: WAVERLY May Medley PEVA Flannel Back Tablecloth, 70-Inch Round, Black Bird
Product description: May Medley Black Bird PEVA Flannel Back Tablecloth features a floral pattern in neutral tones, flannel backing for extra grip, and sewn edges to complete the piece. Made from PEVA - this earth friendly table cloth is PVC/chlorine free, while still giving you the benefits of traditional plastic or vinyl.Waverly compliments every mood & lifestyle, allowing you to choose from traditional, transitional and contemporary looks all in patterns that are sure to spice up your kitchen and table.
Product feature: 100% Peva (Plastic/Vinyl) Surface / 100% Polyester Backing, Imported, Includes: 1 May Medley PEVA Tablecloth, Black Bird, Size: 70" Round (178cm) - Seats 4-6, Fits Table Size: 44 in to 58 in, Highlights: Waverly design favorite, PVC/chlorine free, flannel backed, sewn edges, Care Instructions: Wipe clean with a damp cloth. Do not iron.
Product brand: WAVERLY
Target attributes: Season
Answer: attribute: season
value: None
source: None